Puppy Vaccine Schedule by Age: Core and Lifestyle Shots

A puppy vaccine schedule is a series of age windows, not one fixed calendar. Most pet puppies start a combination vaccine against canine distemper virus, canine adenovirus and canine parvovirus at around six to eight weeks of age, then receive further doses every two to four weeks — and WSAVA's 2024 global guidelines describe the dose given at 16 weeks of age or older as the most important of the early series. In North America, the 2022 AAHA Canine Vaccination Guidelines, updated in 2024, also treat leptospirosis and rabies as core for all dogs, though the leptospirosis product and the rabies date and certificate depend on your clinic's licensed vaccine and your state and local law. Boarding, daycare, classes, travel, tick country and contact with groups of dogs can add others.

Age alone never proves a dose is due. The previous dose, the interval since it, the exact product and route, your puppy's health, your local disease risk and your jurisdiction's rabies rules all have to line up first, and only a veterinarian who can see the record and examine your puppy can turn this framework into real dates.

Go to an emergency veterinary clinic now if, after a vaccination, your puppy shows any of these: collapse; difficulty breathing; sudden forceful vomiting, drooling or diarrhea within minutes of the visit; any swelling of the face, muzzle or eyelids that is increasing, or facial swelling alongside anything else on this list; pale, white, grey or blue gums; weakness, shock or a seizure. Healthy puppy gums are pink and moist, so gums that look pale, white, grey or blue are an emergency finding, not a maybe — Merck notes pale gums and cold limbs among the signs of anaphylactic shock in dogs. For anything milder — tiredness, soreness, eating less — call the clinic that gave the vaccine the same day, and see what to watch for, and for how long. Before the first visit, save the number of your nearest 24-hour emergency veterinary hospital in your phone, so you are not searching for it later. Separately, if your puppy is unwell and the series is not finished, what illness looks like in an incompletely vaccinated puppy sets out the signs that need a call today.

Scope. This is a general educational framework for pet puppies in typical homes in the United States and Canada — not a diagnosis, a prescription, a shelter intake protocol, an import or travel certificate, or a substitute for an examination. Shelter and outbreak protocols, international import, bite or exposure quarantine, pregnancy, current illness and medical exemptions sit outside this page and need your veterinarian and the governing authority. It is also a dog page: kittens use different guidelines and different antigens, and no row here transfers to a cat. Paw Parent HQ is an independent educational publisher; this page carries no advertising, no affiliate links and no sponsored placements, and nothing on it is written to sell you anything. It is written and maintained by the Paw Parent HQ editorial team. Veterinary review status: not yet reviewed. When a veterinary review of this page is completed, it will be credited here by name, credential, and date.

Your first practical action. Gather every vaccination certificate, clinic invoice, transfer sheet and handwritten record card you have, photograph them, and call your veterinary clinic before the next window opens. Our new puppy checklist covers the wider first-month setup; this page stays with the vaccine record.

Where to start, in one line each:

• Start with a records-first appointment if your puppy came from a shelter, rescue, rehome or breeder transfer and the dates, product names or routes are incomplete.
• Plan for several visits if your puppy is under 16 weeks old, because the dose count depends on the age at the first dose and the interval chosen.
• Raise lifestyle-based vaccines at that appointment if daycare, boarding, classes, travel or tick country are ahead, since exposure and product route decide those, not age.
• Do not add, restart, skip or repeat a dose on your own on the strength of any online table, including this one — when the record is unclear, the safe next step is a phone call, not another injection.
• Say so if money or getting to a clinic is the problem, because there are usually lower-cost routes and a delayed start is the worse outcome.

On this page

• What does the puppy vaccine schedule look like at each age?
• Which situation are you in?
• How should you read this schedule, and who decides each part?
• Why does a puppy need a series of shots instead of one?
• Which puppy vaccines are core, and which are lifestyle-based?
  • Does my puppy need Bordetella, Lyme or canine influenza?
  • Where Lyme risk is concentrated
  • What rabies law requires, and who to ask in your state
  • What do DAPP, DA2PP and DHPP mean on my puppy's record?
• What if my puppy's records are missing or a dose was missed?
• When can my puppy meet other dogs and see the world?
  • What illness looks like in an incompletely vaccinated puppy
• What should I watch for after my puppy's vaccination visit?
• What happens after the puppy series ends?
• Puppy vaccine questions pet parents ask
• Your next three steps
• Sources and last verified date

What does the puppy vaccine schedule look like at each age?

Sources for this table were reopened and verified on August 6, 2026. It applies to pet puppies in typical homes in the United States and Canada, and describes what is commonly addressed in each window — not what is due for your puppy on a particular date. Each row carries a verification status, so you can see which parts are general framework and which are limited by your product, your records or your local law.

Puppy vaccine schedule by age window

Age window	What is typically addressed	What changes this row	Source and verification status	Your next action
Before the first or next visit	Collect every record for your puppy: transfer paperwork, shelter or rescue notes, adoption documents, prior-clinic history and any rabies certificate.	Nothing should be inferred from age alone. The clinic verifies antigen, date, product, route, interval and certificate before planning.	Paw Parent HQ editorial aid, built on the record fields WSAVA 2024 asks clinics to document. Partial or Blocked until the record is reconciled.	Photograph everything and send it ahead of the appointment.
About 6 to 8 weeks	The core canine combination against distemper, adenovirus and parvovirus may begin.	The exact antigens depend on the product used; combination names differ. Shelter, high-risk and product-specific circumstances can start earlier or differently.	AAHA 2022 (2024 update) and WSAVA 2024 both describe a start from about 6 weeks. Verified general window; individual date required.	Ask which product was used and write down the full antigen list.
About 8 to 12 weeks	Your puppy's core combination continues, roughly two to four weeks after the previous dose. The lifestyle and local-risk conversation starts here.	Do not add a vaccine only because the puppy has reached this age band. Route and product label control the timing of some respiratory products.	AAHA Table 2 (updated 2024); WSAVA 2024 narrative guidance. Verified with product and record limitation.	Bring your honest answers about boarding, classes, travel and tick exposure.
About 12 to 16 weeks	Your puppy's core series continues. Leptospirosis for dogs is addressed under AAHA's current North American core framework. Rabies follows law and product. Risk-based vaccines are considered if indicated.	Leptospirosis and rabies are not one universal visit. AAHA's table starts leptospirosis at 12 weeks in puppies; WSAVA points to the product leaflet. Rabies timing is set by your jurisdiction.	AAHA Table 2 (updated 2024); WSAVA 2024; CDC rabies guidance for veterinarians. Verified with local-law and product limitation.	Ask your clinic what your state and locality require for rabies, and when the certificate is issued.
16 weeks and older	A dose of the canine distemper, adenovirus and parvovirus combination given at 16 weeks of age or older. WSAVA calls this the most important dose of the early series.	Prior doses, intervals, product and local disease pressure decide the last early visit. Where local distemper or parvovirus risk is high, AAHA states that finishing at 18 to 20 weeks may be preferred, and WSAVA advises continuing to 20 weeks of age in especially high-risk situations.	WSAVA 2024 canine guidelines; AAHA 2022 (2024 update) narrative. AAHA's table describes at least three doses between 6 and 16 weeks, two to four weeks apart. Verified general framework; high-risk status individualized.	Confirm in writing that a qualifying dose was given at or after 16 weeks.
About 20 to 26 weeks	A decision point for puppies: WSAVA supports either antibody testing from 20 weeks of age, at least four weeks after the last puppy dose, or an extra core dose at or shortly after 26 weeks.	AAHA's North American table instead uses a core dose within one year of the last dose in the initial series, and AAHA does not publish protective antibody values. These are alternatives, not a combined plan.	WSAVA 2024; AAHA Table 2 (updated 2024) and narrative. Verified guideline difference; clinic protocol decides.	Ask which of the two your clinic follows, and why it fits your puppy.
First-year health check	A full preventive examination for your dog. AAHA calls for a core combination dose within one year of the initial series, with leptospirosis and most risk-based vaccines reviewed annually. A rabies booster is recommended one year after the first rabies dose.	A health check, not a shots-only transaction. Exposure changes as your puppy grows, so the risk conversation is repeated.	AAHA revaccination table and narrative; WSAVA annual health-check guidance; NASPHV Compendium 2016 and local law for rabies. Verified with product, law and patient limitation.	Book it as an exam, and bring an updated list of where your dog now goes.

Which situation are you in?

Most people arrive at a page like this from one of a handful of situations, and the situation — not the age — usually decides what happens next. This router is a Paw Parent HQ editorial aid: it points you to the section that does the work, and names the one question worth asking first.

Situation router

Your situation	Puppy's age and record state	What actually decides the next step	Where to go on this page	Ask the clinic first
Adopted from a shelter, rescue or rehome; paperwork incomplete or unreadable	Any age; records partial or blocked	Whether each recorded dose can be identified by product, route and date — a dose with no product name cannot be interpreted	Records and missed doses	"Can you tell from this paperwork which antigens my puppy has actually had?"
Came home with a clear record card and a next appointment	Under 16 weeks; records verified	Age at the first dose and the interval between doses, which together set how many visits remain	Schedule by age window	"Will a qualifying dose land at or after 16 weeks, and on what date?"
Daycare, boarding, classes, travel or tick country coming up	Any age in the series	Exposure and product route, not age — and what the facility requires, which is its policy rather than a medical rule	Bordetella, Lyme and canine influenza	"Given what you're seeing locally right now, which of these do you recommend for this puppy?"
An appointment was missed by weeks or months	Any age; series interrupted	The exact date and product of the last dose, which the clinic checks against that product's instructions	Records and missed doses	"With these dates and this product, do we continue or change anything?"
Your puppy reacted to a previous vaccination	Any age; reaction documented or remembered	What happened, how soon after the dose, and which vaccines were given that day	After-vaccination triage	"How do you want to plan the next visit given that reaction?"
A small-breed puppy, or one with a reaction on record	Any age; size or history known	Whether to give fewer vaccines at one visit — AAHA suggests that precaution for dogs that have reacted before and, as a general matter, for small dogs	After-vaccination triage	"Given her size and history, how do you want to sequence the visits?"
Other dogs already living at home	Any age; residents' status may not be current	Whether the resident dogs' own vaccination status is genuinely up to date, since they are your puppy's closest daily contact	Exposure ladder	"Should I bring my other dogs' records in too, so you can see the whole household?"
Someone at home is pregnant or has a weakened immune system	Any age	Nothing about the puppy's schedule changes on its own, but leptospirosis is a disease people can catch, so the household is worth raising. A person's own risk is a question for that person's physician, not for a veterinary page	Core and lifestyle vaccines	"Given who lives here, is there anything you would do differently or explain to us about hygiene?"
Cost, distance or clinic access is the obstacle	Any age	Whether a lower-cost or shorter-notice route exists near you — a delayed start is the worse outcome	If cost or getting to a clinic is the obstacle	"What is the least expensive way to complete this series with you, and is there a clinic you'd point me to?"
Your puppy is unwell on the morning of the appointment	Any age; acute illness	Whether to vaccinate today or wait — a clinical judgment, and one that should not stretch out	If your puppy is unwell on the day	"Should we still vaccinate today, and if not, when exactly do we reschedule?"

How should you read this schedule, and who decides each part?

Verification statuses above were assigned on August 6, 2026 and are scheduled for review by November 4, 2026, or sooner if AAHA or WSAVA issues an update, a new edition of the NASPHV rabies compendium is published, a rabies rule changes in a way that affects the general framework, or a governing source changes its guidance on adverse events.

What makes this different from a printable calendar is that every consequential row names its source, so you can see whether a statement is professional guidance, a legal requirement or an editorial aid. A row that cannot be safely completed is marked Partial or Blocked rather than filled with a plausible guess, and "verified" here always means verified against a named source, on a stated date, for a stated scope. The page also states its limits: AAHA describes its own recommendations as general rather than universally prescriptive, and asks veterinarians to follow the manufacturer's label for the specific product in front of them — which is exactly why no online table can name your puppy's dates.

The sources have limits of their own. AAHA's guidelines pages disclose that the guidelines are supported by four animal-health companies; that is normal for veterinary guideline development, and we note it rather than treat it as a reason to discount peer-reviewed guidance. WSAVA's guidelines are deliberately global, so they are strong on immunology and weaker on any one country's specifics — which is why the North American framing here leans on AAHA.

Who says so: guideline, law, label, or editorial judgment

Category	What it actually is	Who establishes it	What it changes for you and your puppy
Veterinary guideline	Peer-reviewed professional recommendations, explicitly discretionary	AAHA for North America; WSAVA globally	Sets the default framework your veterinarian works from; it is advice, not a legal rule
Law and public-health rule	Binding requirements, mostly about rabies	State legislature, local ordinance, state veterinarian and public-health authority, with national context from CDC	Sets the rabies timing, the certificate and your dog's legal status; a guideline cannot override it
Vaccine product label	The licensed instructions for one specific product	Manufacturer, licensed through the USDA Center for Veterinary Biologics	Sets minimum age, route, dose count and interval for that product — which is why the product name matters
Your puppy's medical record	The documented history for this individual animal	The administering veterinarian or clinic	Turns a general age window into a real due date
Paw Parent HQ editorial aid	Our organizing tools: the situation router above, the checklists, the question lists and the exposure ladder below	Paw Parent HQ	Helps you prepare and ask better questions; carries no clinical or legal authority

Where the two guidelines disagree, and what we publish

Sources sometimes contradict each other, and averaging them produces a schedule neither one endorses. We name the disagreements that affect this page rather than smoothing them over.

The interval between early core doses. WSAVA's written guidance says every two to four weeks; WSAVA's own canine summary table says every three to four weeks. AAHA's table says two to four weeks apart. We publish two to four weeks for North America, cite AAHA's table for it, and note that your clinic's product label settles the question for your puppy.

Antibody testing after the puppy series. WSAVA supports serological testing — a blood test, often called a titer, that measures how much antibody is present — from 20 weeks of age to confirm a response. AAHA declines to publish protective antibody values at all, states that a titer regardless of amount is not necessarily indicative of protection or susceptibility, and does not usually advise routine titer testing except where a dog has a history of adverse responses, where vaccine-related autoimmune disease is suspected, or where an owner is hesitant about revaccination. Both positions are defensible; they answer different questions. Ask which your clinic uses before you pay for a test.

Rabies is the exception to all titer talk. Both AAHA and the NASPHV Compendium of Animal Rabies Prevention and Control, 2016 state that antibody levels have not been established as correlates of protection for rabies and that serological testing is not a substitute for vaccination. A rabies titer does not satisfy a rabies law.

Why does a puppy need a series of shots instead of one?

The short answer is that nobody can tell, without a blood test, when your individual puppy becomes able to respond to a vaccine.

Puppies absorb antibodies from their mother's colostrum in the first hours of life. WSAVA's 2024 guidelines explain that these maternally derived antibodies protect the newborn but also interfere with the puppy's ability to mount its own immune response to most core vaccines. In most puppies those antibodies fall to a level that allows an active response somewhere around 8 to 12 weeks of age, but some puppies get there earlier and others cannot respond until 12 weeks or later. WSAVA describes the gap in between — when maternal antibody is too low to protect but still high enough to block the vaccine — as the "window of susceptibility," and says it is not possible to predict when that window opens or closes without serological testing, because the amount transferred varies between litters and even within a single litter.

That single fact explains the whole shape of the schedule. Because the moment cannot be predicted, doses are repeated every two to four weeks so that one of them lands soon after the window closes. WSAVA is explicit that these repeated early doses are not booster doses: a booster boosts an immune response that already exists, whereas the early puppy doses are attempts to establish one. Giving them closer together than two weeks apart is not advised.

It also explains why the count varies. AAHA's table describes at least three doses of the combination vaccine between 6 and 16 weeks, two to four weeks apart, for puppies starting in that period. WSAVA advises starting no earlier than 6 weeks and continuing until 16 weeks of age or older, and notes plainly that the number of primary doses depends on the age at which vaccination started and the intervals chosen. A puppy who started at 6 weeks and a puppy who started at 11 weeks will not have the same number of appointments, and neither one is behind.

Finally, it explains the emphasis on the dose at 16 weeks or older. By that age, WSAVA says, maternal antibody has waned substantially in a large majority of puppies, so almost all of them should be able to respond. That is why "how many shots did we do" is a much weaker question than "was there a qualifying dose at or after 16 weeks, and what was the interval before it."

Where local risk is high, the finish moves later. AAHA's guidelines state that maternally derived antibodies against distemper are usually gone by 12 to 14 weeks of age, while those against parvovirus may persist for 13 to 15 weeks or possibly longer — and that finishing at 18 to 20 weeks of age may be preferred particularly in areas of high distemper or parvovirus risk. WSAVA describes a comparable approach where exposure pressure is high: continuing until 20 weeks of age and considering shorter intervals, and, in shelters and sanctuaries, starting at about one month and repeating every two to three weeks until five months. A rescue puppy may arrive carrying records from a shelter protocol. That history still needs reconciling against a typical-home plan, and the veterinarian does that — not the schedule above.

Which puppy vaccines are core, and which are lifestyle-based?

"Core" means broadly recommended under a particular guideline, for a particular population. It does not mean legally required, and it does not mean every dose uses the same product, route or interval. "Lifestyle-based" — the plainer word for "non-core" — does not mean unimportant. It means the decision is driven by exposure and geography rather than by being a dog.

AAHA's current North American framework lists the core vaccines for all dogs as distemper, adenovirus and parvovirus — with or without parainfluenza in the combination — plus Leptospira and rabies. WSAVA's global framework treats distemper, adenovirus and parvovirus as core everywhere, rabies as core wherever the disease is endemic even if the law does not require it, and leptospirosis as core in regions where the disease occurs, the relevant serogroups are known and suitable vaccines are available. Neither framework is wrong; they are answering slightly different questions, and the geographic scope is the difference.

The 2024 leptospirosis change. AAHA's guidelines page carries a standing note that the 2022 guidelines were updated in 2024 to include leptospirosis as a recommended core vaccine for all dogs. AAHA was not alone in moving: the 2023 ACVIM consensus statement on leptospirosis in dogs, published in the Journal of Veterinary Internal Medicine, concluded that all dogs are at risk regardless of signalment, geographic location, lifestyle and time of year, and WSAVA's 2024 guidelines moved in the same direction under a geographic condition. Two independent expert panels reaching the same conclusion is worth knowing when you read the funding disclosure above. The change is recent enough that many well-maintained puppy articles still list leptospirosis as an optional extra, so if you are comparing pages and find a contradiction, check the date on the classification.

AAHA is also direct about who is at risk, and its full guidelines are worth reading if you have assumed this is a rural, big-dog disease. AAHA states that most dogs in North America should be considered at risk, that the historical pattern of large-breed dogs with rural outdoor exposure is no longer true, that small-breed dogs are frequently infected, that dogs of any age, breed or sex can be infected, and that infection is well documented even in arid regions such as Arizona. The risk factors it names are spending any time outdoors in urban, suburban or rural environments, exposure to rodents, and time in kennels or dog daycares.

The table below carries every vaccine and measure this page covers, core and lifestyle-based together, in the same fields and the same order — including the column most product pages leave out, which is what each one does not do. Verified against AAHA's 2022 (2024 update) guidelines and table, WSAVA's 2024 canine table, the 2023 ACVIM consensus statement and CDC rabies guidance on August 6, 2026.

Core and lifestyle vaccines for pet puppies: what each one fits, and what it does not do

Vaccine or measure	Who it fits — and who it does not	Route and product fields that change the answer	What it does not do	Current guidance, and what to do if you don't know
Core combination: distemper, adenovirus and parvovirus, with or without parainfluenza	Every pet puppy — this is the row that applies regardless of lifestyle. Not ideal for no puppy on lifestyle grounds; where a puppy is acutely unwell on the day or has reacted before, the timing is a clinical decision rather than a table's.	The exact antigens depend on the product; combination names differ. AAHA's table describes at least three doses between 6 and 16 weeks, two to four weeks apart, with a qualifying dose at or after 16 weeks. WSAVA advises starting no earlier than 6 weeks and continuing to 16 weeks or older.	Does not cover leptospirosis, rabies, Bordetella, Lyme or canine influenza — those are separate products, recorded separately. Does not protect on the day it is given: WSAVA describes maternal antibody blocking the response in many puppies until somewhere around 8 to 12 weeks, which is why the dose at 16 weeks or older matters most. A dose count is not a completed series.	Core for all dogs in both frameworks. Verified general framework; individual dates required. If you don't know which product was used, ask for the full antigen list in writing before the next dose.
Leptospira (leptospirosis)	Dogs of any breed, size and lifestyle that go outdoors, under AAHA's 2024 update and the 2023 ACVIM consensus statement. Not ideal for puppies under 12 weeks: AAHA's task force suggests starting at or after 12 weeks because reactions of any type are more likely in smaller and younger dogs.	Inactivated bacterin. AAHA's table describes two doses two to four weeks apart, starting at 12 weeks in puppies, then a dose within a year and annual revaccination. WSAVA notes the initial dose is usually given from 8 weeks and directs veterinarians to the product leaflet — another reminder that the product, not the age, sets the timing.	Does not cover every Leptospira serovar — the strains a given product is made against — and ACVIM's 2023 statement notes that inadequately vaccinated dogs continue to be infected, including dogs given two-serovar products in some regions. Does not remove the need to have your dog seen if it becomes unwell.	Core in AAHA's North American framework; core in WSAVA's framework wherever the disease is endemic, serogroups are known and suitable vaccines exist. Verified with product limitation. If you don't know how many serovars your puppy's product covered, ask.
Rabies	Every dog this page covers — and in most jurisdictions a legal requirement rather than a recommendation. Not ideal for puppies under 12 weeks: AAHA states all licensed canine rabies products in the United States are labeled for puppies 3 months of age and older, and CDC gives the same guidance. AAHA notes legal exemptions exist only in certain jurisdictions.	One-year and three-year licensed products both exist, and the labeled duration is not the same as how long your jurisdiction treats the certificate as current. A booster is recommended one year after the first dose regardless of the product or the puppy's age at that dose.	A titer does not satisfy a rabies law — both AAHA and the NASPHV Compendium state that antibody levels are not established correlates of protection and that serology is not a substitute for vaccination. A tag is not a certificate. Vaccination does not decide how a bite or exposure is managed; public health officials do.	Core in both frameworks, with law on top. Verified with local-law and product limitation. If you don't know your jurisdiction's rule, use the routing steps below rather than copying another state's answer.
Bordetella bronchiseptica, alone or combined with parainfluenza	Boarding, daycare, classes, grooming, shelters, shows, or dense contact with other dogs. Not ideal for a puppy with none of those exposures, or as a way to satisfy a facility requirement your veterinarian does not think this puppy needs.	Route is decisive. Mucosal products (intranasal or oral) protect after a single dose; injectable products — killed-bacteria "bacterin" types and "subunit" types, made from part of the organism rather than all of it — generally need two doses, two to four weeks apart. Minimum age differs by product — WSAVA notes some mucosal products can be given from as early as 3 weeks and others from 7 or 8 weeks.	Does not prevent infection; WSAVA states non-core respiratory vaccines may reduce disease severity rather than prevent it. Does not cover every cause of kennel cough — AAHA notes dogs at risk of Bordetella are also at risk of parainfluenza and adenovirus type 2 and should be covered for all three.	Non-core for pet dogs in homes in both frameworks, with annual review. Verified with product and route limitation. If you don't know which route was used, treat the series as unconfirmed and ask. Both WSAVA and AAHA warn that products intended for intranasal or oral use must never be injected, as the resulting reaction can be serious.
Canine influenza (H3N8, H3N2 or bivalent)	Co-housed groups, boarding, daycare, shows, travel, or a current local outbreak. Not ideal for a puppy with no group exposure and no local outbreak, and not a substitute for asking what is circulating near you this month.	Inactivated injectable products requiring two doses to immunize, generally two to four weeks apart, with the initial dose from 6 weeks of age in WSAVA's table, then annual revaccination. Strain and availability vary.	Does not prevent infection; WSAVA notes these vaccines may reduce severity rather than prevent it, and that they are licensed only in the USA.	Non-core in both frameworks, and AAHA states that routine use in all dogs is not currently recommended. Verified framework; product-limited. If outbreak status is unclear, ask your clinic what it is currently seeing locally; AAHA points veterinarians to Cornell's canine influenza updates for current circulation.
Lyme disease (Borrelia burgdorferi)	Tick exposure where you live, walk or travel. Not ideal for a puppy with no such exposure, or as a last-minute measure before a trip — the initial doses take weeks to complete.	Bacterin and subunit products, two doses to immunize, generally starting at about 8 weeks of age, with annual revaccination timed ahead of the regional tick season. AAHA advises completing both initial doses two to four weeks before travel to an endemic area.	Does not replace tick control, which WSAVA calls the mainstay of prevention. Protection is incomplete — WSAVA states no Lyme vaccine gives complete protection and that efficacy is uncertain.	Non-core; AAHA notes that in endemic regions practices may treat traditionally non-core vaccines as core locally. Verified with geographic and evidence limitation. If your local risk is unclear, ask before assuming either way.
Tick control (a parasite preventive, not a vaccine)	The same exposure question — where you live, walk or travel. Not ideal for self-selection from a shelf: species, age and weight restrictions are set by the specific product label.	Product class, application interval, and any species, age or weight restrictions, all of which are set by the specific product label and by your veterinarian.	Does not immunize against anything. It reduces tick feeding, which is how transmission is interrupted.	Included here because WSAVA states diligent ectoparasite control, not the vaccine, is the mainstay of Lyme prevention, and AAHA advises that vaccination be complemented by an ectoparasite control program. Verified as guideline position; product choice not compiled here. Ask your veterinarian which product suits your puppy's age and weight.
Rattlesnake toxoid (Crotalus atrox)	Living or hiking in a specific high-exposure region, where your veterinarian has raised it. Not ideal for a puppy outside those regions, and not a decision to make from a website.	AAHA notes dosing requirements and frequency vary among dogs depending on body weight and exposure risk.	Does not replace emergency veterinary treatment after a bite. AAHA states there are no published data documenting efficacy in dogs, that manufacturer claims of cross-protection against other pit vipers are unsupported in dogs, and that anaphylaxis has been reported in previously vaccinated dogs that were later envenomated.	Non-core and genuinely regional. Partial — evidence limited; product fields not compiled here. AAHA names polyvalent antivenin therapy as the alternative in suspected rattlesnake bite. Treat this as a conversation with a veterinarian who knows your area, not as a box to tick.

Does my puppy need Bordetella, Lyme or canine influenza?

For a puppy about to start daycare in an area with a current respiratory outbreak, a lifestyle-based vaccine can matter more that month than a routine core dose. For a puppy with none of those exposures, it may not be indicated at all. Compare any two rows above straight across: the same five fields decide all of them.

Bring specifics rather than categories — "three mornings a week at a daycare that takes 30 dogs" is a different exposure from "occasional daycare." And revisit it annually, because AAHA asks that patients be reassessed at least yearly as travel patterns and vector-borne disease ranges change; AAHA also publishes a vaccine recommendation schedule based on age at initial vaccination and lifestyle that your veterinarian may use to structure it. And remember that an indoor puppy is not an unexposed puppy — floors, shoes, the waiting room and visiting dogs are all routes. The opposite overcorrection is just as unhelpful: none of the lifestyle-based vaccines is recommended for every dog, and none should be added because a template listed it.

Where Lyme risk is concentrated

As far as canine testing data show, AAHA's guidelines report that in a 2013–2019 dataset, the states with at least 5% seroprevalence among tested dogs were, from highest to lowest, Connecticut (15.5%), Massachusetts, Vermont, Maine, Pennsylvania, New Hampshire, Rhode Island, New York, New Jersey, West Virginia, Minnesota, Virginia, Maryland, Delaware, Wisconsin and the District of Columbia; in Canada, AAHA describes the disease as endemic in parts of Manitoba, eastern Ontario, southern Quebec, Nova Scotia and New Brunswick. Read that for what it is: a dated observation of antibody findings in dogs who were tested, not a risk score for your puppy and not a list of places where the vaccine is required. Testing is not evenly distributed, tick ranges are expanding, and risk varies sharply within a single state. If your state is not on the list, that is not evidence of no risk — AAHA notes the geographic expansion of endemic areas may well occur. Your veterinarian and your county are the right scale for this question. Verified as a dated dataset observation, 2013–2019; not a jurisdiction requirement and not individual risk.

What rabies law requires, and who to ask in your state

Rabies is preventive care and law at the same time. CDC's guidance for veterinarians is that dogs, cats and ferrets should be vaccinated against rabies according to local laws, that animal rabies vaccines should only be given by a veterinarian or under veterinary supervision, and that schedules vary by product and by state. CDC also notes that most dogs should not be vaccinated before three months (12 weeks) of age, because the immune response is weaker in very young animals, and — as a public-health definition rather than a socialization timer — that an animal is considered immunized 28 days after its initial vaccination.

This page does not carry state-by-state rabies requirements, and no online table should be trusted for yours. What it carries is the national framework, the specific list of things your jurisdiction can change, and a route to your own answer that works in every state and territory. Every row below routes to the authority that actually decides.

What varies by jurisdiction, and who sets it

What can vary	What the national framework says	Who sets your answer	What to do about it
Minimum age at the first rabies dose	AAHA states that all licensed canine rabies products in the United States are labeled for puppies 3 months of age and older; CDC gives the same 12-week guidance	State law or regulation, plus the product label	Ask your clinic what your state sets, and do not assume it matches a neighboring state
Timing of the first booster	A booster is recommended one year after the initial dose, regardless of the product's labeled duration or the puppy's age at the first dose. AAHA states the booster's purpose is to immunize any animal that failed to respond to the first dose, and the NASPHV Compendium gives the same one-year recommendation	Product label and state law	Get the one-year date in writing at the first rabies visit; this is the date most often missed
Booster interval after that first year	One-year and three-year licensed products both exist. That number is the product's duration of immunity — the period its label says protection is expected to last — which is not the same thing as how long your jurisdiction treats the certificate as current. The NASPHV Compendium states there are no laboratory or epidemiological data supporting annual or biennial use of three-year vaccines after the initial series is complete	State or local law, which can require more often than the label	Ask which product was used, its labeled duration, and what your jurisdiction accepts
Whether an exemption is possible	AAHA states that legal exemptions from rabies vaccination requirements are available only in certain jurisdictions	State or local law	Raise it with your veterinarian in the context of your dog's health and exposure, and have the discussion documented
How an overdue dose is handled	The NASPHV Compendium directs that an overdue animal be given a booster, after which it is considered currently vaccinated immediately; how an overdue animal is managed after a possible exposure depends on documentation	State and local public health officials	Consult the clinic and, if exposure is involved, your local health department — not a forum and not this page
What counts as proof	The NASPHV Compendium directs agencies and veterinarians to use NASPHV Form 51, the rabies vaccination certificate, or an equivalent, completed in full and signed by the administering or supervising veterinarian	The issuing veterinarian, under state rules	Keep the signed certificate; a tag is not a certificate
Moving or travelling between states	The Compendium advises that dogs be currently vaccinated before interstate movement and travel with a valid certificate. AAHA advises applying the requirements of the jurisdiction where the animal resides when requirements differ	Both your home and destination jurisdictions	Check before you move, not after

Finding your own jurisdiction's answer, in four steps. This works wherever you live, and it matters that the second step names the right office, because two different state officials are routinely confused with each other.

1. Ask your veterinary clinic first. They vaccinate under your jurisdiction's rules every day, and they issue the certificate.
2. Then your state public health veterinarian, who handles rabies and other diseases people can catch from animals. NASPHV explains that the state public health veterinarian works for the state health department, whereas the separate "state veterinarian" works for the state agriculture department and focuses primarily on livestock disease. Ask for the former.
3. Find that office through CDC's directory of state, local and territorial health departments. Titles and program names are not identical in every state, so the health department's zoonotic or communicable disease program is the reliable entry point.
4. For licensing and registration, ask your city or county, not your state. The Compendium notes that registration or licensure of dogs is an integral part of rabies control and that evidence of current vaccination should be an essential prerequisite to it.

There is no national due date, and you cannot copy another puppy's certificate date.

What do DAPP, DA2PP and DHPP mean on my puppy's record?

DAPP, DA2PP and DHPP are naming conventions, not identical products. Each letter stands for an antigen, and the exact combination varies by manufacturer, so the label — not the acronym — tells you what your puppy actually received.

• D — canine distemper virus.
• A or A2 or H — canine adenovirus, usually type 2, which also protects against the disease historically called infectious canine hepatitis.
• P — canine parvovirus.
• The second P, when present — canine parainfluenza virus, which AAHA classifies as an optional component of the core combination and WSAVA classifies as non-core on its own for pet dogs in homes, while treating it differently in shelter populations.

For every dose, the useful fields are the date, the full product name, the antigens included, the route, and the clinic that gave it. Leptospirosis and rabies are recorded separately from the core combination even when given at the same visit, and rabies additionally needs a signed certificate. Ask for those fields in writing; "puppy shots, up to date" is not a record you can act on later.

What if my puppy's records are missing or a dose was missed?

This is the most common reason people arrive at a page like this, and it is not a failure on your part. Rescue and rehome paperwork is often incomplete, handwritten cards get lost, and appointments slip. None of that is fixed by guessing, and the safest thing you can do is arrive at the clinic with an organized picture of what is known and what isn't.

Here is what a usable record contains. WSAVA asks clinics to document, for each dose: the date it was given, who gave it, the vaccine name with lot or serial number, expiry date and manufacturer, and the anatomical site and route. WSAVA also recommends that vaccination certificates state how long the animal is expected to be protected, not just when the dose was given.

Record reconciliation checklist

What to capture	Why it matters	Status if you can't confirm it
Puppy identity: name, date of birth or estimated age, source, and date you took the puppy home	Age at first dose drives everything downstream	Partial — estimated ages are workable, but say so rather than rounding
Each dose: date, full product name, antigens included, manufacturer, lot and expiry if shown	Determines whether a dose counts toward the series	Blocked — a dose with no product name cannot be interpreted
Route and site, and who administered it	Route changes the series for several products	Partial — flag it; the clinic may be able to infer from the product
Rabies proof: signed certificate, product, date, duration, issuing veterinarian, jurisdiction	This is a legal document, not a reminder	Blocked — a tag, a photo of a tag or a verbal assurance is not a certificate
History: any prior reaction, illness, medication, or missed appointment	Changes how the next visit is planned	Veterinary review required
Risk: your ZIP code, travel, boarding, classes, wildlife and tick exposure, other dogs at home	Drives the lifestyle-based conversation	Current risk review required
Next step in writing: confirmed next due date, product and route, and a reaction plan	Prevents the next gap	Verified when the clinic documents it

For overdue or unknown non-rabies history, AAHA's position is that the benefits of vaccinating far outweigh the risks when immune status or history is unknown, and that in cases of overdue vaccination the specific vaccine manufacturer should be consulted for instructions. Notice who does that consulting: the clinic, using the product actually in its refrigerator. That is why this page will not give you a restart rule, a skip rule or a "one extra won't hurt" rule.

For rabies specifically, AAHA's direction is to follow local laws and consult the state veterinarian as needed, and CDC's is that animals overdue for rabies vaccination are assessed case by case by public health and animal health officials. Do not infer your jurisdiction's answer from another state's, from a forum, or from this page.

Shelter histories and mid-series product changes are worth calling out separately. If your puppy came through a shelter or rescue, ask the organization and your veterinarian to reconcile the intake protocol against a typical-home plan, because those protocols intentionally differ. And if a clinic changes product or route partway through a series, leave the interpretation to the veterinarian and the current label rather than extrapolating from the previous product.

If cost or getting to a clinic is the obstacle

Say so out loud, to the clinic, early. Cost and access are ordinary reasons puppies fall behind, and the people who can help you are used to hearing it — the outcome nobody wants is a series that quietly stops.

Lower-cost routes exist by design rather than by accident. The NASPHV Compendium describes low-cost or free rabies vaccination clinics as an important tool for public and animal health, and directs jurisdictions to run them in cooperation with veterinary licensing boards, veterinary associations, local veterinarians, animal control officials and animal welfare organizations. That tells you where to look:

• Your city or county animal services department, which often runs or publicizes low-cost vaccination and licensing clinics.
• Humane societies, SPCAs and local rescue organizations, many of which hold public vaccine clinics. Humane World for Animals, formerly the Humane Society of the United States, keeps a resource page for owners having trouble affording care; its Pet Help Finder searches for financially friendly veterinary providers by city, state or ZIP code.
• The shelter or rescue you adopted from — the Compendium advises that shelters and animal control authorities establish policies to ensure adopted animals are vaccinated against rabies, so some of the series may already be done or covered.
• Veterinary teaching hospitals, where they exist within reach; the same Humane World resource page notes that nearby veterinary colleges may run assistance programs.
• Your own clinic, which may be able to spread the series, price the whole course up front, or point you to a local program it already works with.

Ask the clinic to price the series rather than the visit, and ask which parts are due now and which can wait. It is a fair question and a common one.

If your puppy is unwell on the day of the appointment

Tell the clinic what you are seeing and let them decide — do not simply skip and rebook without saying why. Whether to vaccinate a puppy with an acute illness is a clinical judgment, and it is theirs. What the guidance is clear about is that the delay should be short: the NASPHV Compendium states that a veterinarian who chooses to temporarily delay vaccinating an animal with an acute illness or condition should ensure the animal is vaccinated as soon as possible, and notes there is no evidence that adverse events are more likely with rabies vaccination of ill animals than healthy ones. If your puppy is unwell enough that you are wondering about the appointment, that is a reason to call about the illness, not only about the vaccine.

When can my puppy meet other dogs and see the world?

There is no single date, and the common advice to keep a puppy indoors until the series is finished is not what current guidance says. WSAVA's 2024 guidelines strongly support early socialization as essential to healthy behavioral development, state that careful socialization can begin before the vaccination series is complete, and cite research finding that the risk of parvovirus-related disease in puppies attending early socialization classes partway through the series is low. Behavioral development has its own window, and it does not pause while the vaccine series runs.

What replaces the single date is a setting-by-setting judgment, made with your veterinarian, using local disease pressure and your puppy's actual record. The exposure ladder below is a Paw Parent HQ organizing aid, not a clinical rule — the levels are labeled in words rather than colors so they read the same in any format.

Exposure ladder for an incompletely vaccinated puppy

Level	What it usually looks like	What has to be true first
Lower risk	Your own home and a secure yard that unknown dogs do not use; car rides; carried outings; visitors who wash their hands, including children who wash before and after handling with an adult in the room; meeting a known, healthy, fully vaccinated adult dog in your own space	Nothing beyond ordinary hygiene and a settled puppy. Making the home itself safe is a separate task — see how to puppy-proof your home for household hazards
Moderate risk, veterinarian-approved	A structured puppy class that requires proof of vaccination and cleans its floors between sessions; visits to a friend's home where the dogs' vaccination status is actually known	Your veterinarian agrees, given your puppy's record and what disease is currently circulating locally
Higher risk	Dog parks, pet-store floors, shared elimination areas, rest stops, boarding, and any contact with dogs of unknown status — plus anywhere during a local outbreak	Wait, or ask your veterinarian for a specific plan. These are the settings where an incomplete series matters most

A few things are commonly misunderstood here:

• "Off the ground" is not a full risk assessment. Close contact with another dog, contaminated surfaces, feces, respiratory droplets and shared bowls or toys all matter, and a puppy in your arms can still meet them.
• The 28-day figure from rabies public-health guidance is about rabies exposure status, not parvovirus or respiratory disease, and it is not a socialization countdown.
• A class asking for "up to date for age" is applying its own policy, which may not match your veterinarian's read of the record — ask both.

Both risks are real. Infectious disease in an incompletely vaccinated puppy is serious, and so is a dog who never learned how to meet people, surfaces, sounds and other dogs. Your veterinarian is the right person to weigh the two for your puppy, in your area, this month — and if your puppy seems more than shy, freezing, hiding, or not recovering after ordinary outings, that is a question for a credentialed professional rather than a schedule. Start with your veterinarian, who can look for a medical cause first; AVSAB's guidance on selecting a behavior consultant explains what the various credentials mean, and the American College of Veterinary Behaviorists, an AVMA-recognized specialty organization, maintains a search for board-certified veterinary behaviorists.

What illness looks like in an incompletely vaccinated puppy

The ladder above is mostly about two diseases, and it is worth knowing what they look like — because an incompletely vaccinated puppy who becomes unwell is a different situation from an adult dog with an upset stomach.

Parvovirus. AVMA lists lethargy, loss of appetite, vomiting, severe and often bloody diarrhea, abdominal pain and bloating, fever or a low body temperature, and drooling from nausea among the signs to watch for, and names puppies between 6 and 20 weeks old and unvaccinated or incompletely vaccinated dogs among those at greatest risk. Its instruction is to contact your veterinarian immediately if your dog shows any of these signs, because persistent vomiting and diarrhea can quickly cause severe dehydration.

Distemper. AVMA describes watery to pus-like discharge from the eyes first, then fever, nasal discharge, coughing and lethargy, with vomiting and reduced appetite as the virus spreads to the gastrointestinal system; the nose and footpads may thicken and harden, and neurological signs can follow as the disease progresses. Its instruction is the same: contact your veterinarian immediately.

What to do with that. Do not wait to see whether it settles, and do not try to tell these apart at home — several ordinary puppy problems, intestinal parasites among them, look similar at the start, and the distinction is a clinical one made with testing. Call your veterinary clinic, or an emergency veterinary hospital out of hours, and say in your first sentence that your puppy's vaccination series is not complete. That changes how urgently you are seen and how you are asked to arrive, because both diseases spread easily to other dogs. AVMA notes that prompt, intensive treatment improves a dog's chance of survival with parvovirus, which is the whole reason the call is worth making early rather than in the morning.

What should I watch for after my puppy's vaccination visit?

Most puppies are fine. USDA's Center for Veterinary Biologics notes that some animals, like people, may be uncomfortable or lethargic on the day they are vaccinated, and that more serious adverse events are a less common possibility.

The first hour, and what normal looks like

USDA advises observing an animal for at least an hour after vaccination, so that it can be treated if necessary — the serious immediate reactions happen fast, and that hour is the reason many clinics suggest staying nearby rather than driving straight home. Know what normal looks like on your own puppy before you need to judge it: healthy puppy gums are pink and moist, so gums that look pale, white, grey or blue are an emergency finding, not a maybe.

The card below separates monitoring from same-day contact from emergency care. Read the emergency row first.

After-vaccination triage

Tier	What it can look like	What to do
EMERGENCY — go now	Collapse; difficulty breathing; sudden forceful vomiting, drooling or diarrhea within minutes of the visit; any swelling of the face, muzzle or eyelids that is increasing, or any facial swelling together with another sign in this row; pale, white, grey or blue gums; weakness, shock or a seizure. The Merck Veterinary Manual lists restlessness, facial swelling, drooling, vomiting, abdominal pain, diarrhea, difficulty breathing, shock, collapse and convulsions among the signs of anaphylaxis, a rare but life-threatening immediate reaction, and lists vaccines among the agents that can trigger it. Onset is typically fast. In dogs specifically, the liver is the main organ affected in anaphylactic shock, so gastrointestinal signs lead rather than respiratory ones: Merck notes that sudden diarrhea, drooling and vomiting are among the first signs, that the gums may be pale and the limbs cold, and that the heart rate is generally fast with a weak pulse. Sudden forceful vomiting within minutes of a vaccination is an emergency sign in a dog, not a stomach upset.	Go to your veterinary clinic or the nearest emergency veterinary hospital immediately. Call on the way if someone else can. Do not wait to see whether it settles, and do not give any medication.
Call the clinic today	Facial swelling that is not increasing, when your puppy is otherwise bright, drinking and settling normally; hives; noticeable pain; obvious injection-site swelling; vomiting or loose stools that begin hours later and are not worsening; anything getting worse rather than better; and anything at all if your puppy has reacted to a vaccine before. USDA lists loss of appetite, fever, facial swelling, hives, nasal or ocular discharge, respiratory distress, vomiting and diarrhea among reactions observed within a day, and stiffness, local inflammation and systemic illness among those seen from a day to two weeks afterwards.	Phone the clinic that gave the vaccine, describe what you're seeing and when it started, and follow their instructions. If your discharge sheet gave you a timeframe, use it; if you weren't given one, treat anything still present the next day, or worsening at any point, as a reason to call. This tier is a Paw Parent HQ organizing aid drawn from the veterinary sources below; your clinic's discharge sheet takes precedence.
Monitor at home	Mild, short-lived effects on the day of the visit or the day after: soreness at the injection site, tiredness, eating less than usual, or a mild fever. A puppy who is quieter than usual but still gets up, drinks and settles normally is behaving the way most puppies do on vaccine day. AAHA describes injection-site pain, mild fever, reduced appetite and malaise as the typical minor effects.	Keep things quiet, keep water available, and note what you see and when. If it is not resolving in the timeframe your clinic gave you, move up to the tier above.

Whatever happens, write down the time the signs started, what you saw, the names of the vaccines given and the clinic that gave them. That record is what makes the next appointment safer.

Is it a problem to give several vaccines at one visit? Not in itself. AAHA states there is no evidence of a lack of protective immunity following concurrent administration of multiple antigens or vaccines, and that combination vaccines containing several pathogens do not inherently carry more adverse-event risk than single-component ones — because the components most often implicated in reactions are not the label antigens at all. Reducing how many are given at one visit is a precaution AAHA recommends for dogs that have reacted before and, as a general matter, for small dogs. It is not an instruction to spread every puppy's series out, and spreading it out has a cost of its own in extra visits and a longer window of susceptibility.

If your puppy has already reacted

The plan for the next vaccination belongs to your veterinarian. AAHA's guidance is that a previous reaction does not mean one will recur, that precautions such as limiting how many vaccines are given at a single visit are prudent, and that a gap of at least two weeks is recommended when vaccines are split across visits. AAHA also notes that reducing a dose below the manufacturer's volume is not advised, and that adverse-event risk sits at the individual patient level rather than the breed level. Those are clinical decisions. This page will not suggest any medication, dose or waiting period.

Reporting an adverse event

Reporting comes after care, not before it. A suspected adverse event is reported through the manufacturer, and USDA APHIS requires manufacturers to pass all adverse events they receive to the Center for Veterinary Biologics. APHIS defines an adverse event as any undesirable occurrence after the use of an immunobiological product, whether or not the product caused it, and states that receiving a report does not imply the product caused the event and that CVB cannot make diagnoses or recommendations for individual cases. Something happening after a vaccine is not the same as something being caused by one. Your veterinarian normally files the report — the AVMA notes that if your veterinarian reports it, you do not need to file separately.

What happens after the puppy series ends?

Most puppy schedules you'll find online stop at 16 weeks and jump to "one year." There is a real difference between the two major guidelines in that gap, and it is worth understanding rather than averaging.

WSAVA's position. Even when the last puppy dose is given at 16 weeks or slightly later, a small percentage of puppies may not respond because of persisting maternal antibody. WSAVA therefore recommends either serological testing at least four weeks after the last puppy dose — from 20 weeks of age, if the guidelines have been followed — or an additional core vaccination at or shortly after 26 weeks. Puppies whose testing at 20 weeks or later shows protection against parvovirus, distemper and adenovirus do not need the 26-week dose. WSAVA is explicit that this replaced its older recommendation of a first annual booster at 12 to 16 months, and that it does not increase the total number of doses — it moves one earlier.

AAHA's position. AAHA's North American table calls for a single dose of the core combination within one year following the last dose of the initial series, with subsequent boosters at three-year intervals. Leptospirosis follows a dose within a year and then annual revaccination. Rabies is "as required by law" — and, separately, a rabies booster is recommended one year after the first rabies dose whichever product was used.

How to handle the difference:

• Do not try to satisfy both by doing both. These are two coherent protocols, and your clinic follows one of them, chosen around the products it stocks, the local disease picture and your puppy's record.
• The two are not mutually exclusive at the one-year mark. WSAVA notes that its 26-week recommendation sits comfortably alongside a first annual health check at around one year that includes rabies where needed and any non-core vaccines.
• Ask, rather than arbitrate. Which protocol your clinic uses is a question you can settle in one sentence at the desk.

Questions worth asking at the follow-up visit

• Which follow-up protocol does this clinic use for the core combination, and why does it fit my dog?
• Was there a qualifying core dose at or after 16 weeks, and what was the interval before it?
• If you use antibody testing, when would you draw it, and what would a negative result mean in practice?
• When is leptospirosis next due, and is my dog's exposure picture still the same?
• What does my state or locality require for rabies now, when is the one-year booster due, and when does the current certificate expire?
• Which of these are due this visit, and which can wait?

Frame the one-year appointment as a full preventive health check rather than a shots visit. WSAVA makes the same point for veterinarians: the annual health check is much more than a vaccination consultation, even when vaccines are given at it. Adult schedules beyond that first year are outside the scope of this page.

Puppy vaccine questions pet parents ask

How many shots does a puppy actually need?

There is no fixed number. AAHA describes at least three doses of the core combination between 6 and 16 weeks for puppies starting in that window, and WSAVA states plainly that the count depends on the age at the first dose and the intervals chosen. Leptospirosis, rabies and any lifestyle-based vaccines are counted separately. A puppy who started later simply has a different, equally valid series.

Is the leptospirosis vaccine safe for my puppy?

Leptospirosis became a core vaccine for all dogs in AAHA's 2024 update, so it is the one owners most often question. AAHA states that vaccine formulations have been altered to reduce reactions, that adverse reactions to leptospiral vaccines appear rare at fewer than 53 adverse events per 10,000 doses, that most are minor, and that serious anaphylactic reactions were reported no more often for leptospiral vaccines than for other vaccine antigens. AAHA also notes reactions of any type are more likely in smaller and younger dogs, which is why the task force suggests giving the first dose at or after 12 weeks of age. The independent 2023 ACVIM consensus statement reached the same practical conclusion, recommending vaccination for dogs from 12 weeks regardless of breed, size, location or season. Your veterinarian is the person to weigh this for your puppy.

How long does the whole puppy vaccine series take?

Longer than one appointment, and set by the slowest dependency rather than a calendar. Those dependencies are your puppy's age at the first dose, the two-to-four-week interval between core doses, the endpoint at 16 weeks or older, extension to 18 or 20 weeks where local risk is high, the separate leptospirosis series, your jurisdiction's rabies timing, and each product's labeled schedule. Missing records add reconciliation time first.

What should I do if my puppy missed a vaccine appointment?

Call the clinic with exact dates and the product name, and let them decide. AAHA's direction for overdue vaccination is to consult the specific vaccine manufacturer for instructions, and for rabies to follow local law and consult the state veterinarian as needed. There is no safe do-it-yourself rule here — not restarting, not skipping, not doubling up. See the records section above for what to bring.

When can my puppy go for a walk or start classes?

By setting, not by date. WSAVA supports careful early socialization before the series is complete, so a veterinarian-approved class that checks vaccination status is a different question from a dog park. Your veterinarian weighs your puppy's record against what is circulating locally. The exposure ladder above is the fuller answer.

What do puppy vaccinations cost?

We don't publish prices here, and we won't estimate one, because the answer depends on inputs only your clinic has: how many visits your puppy's start age requires, which products are used, whether an exam fee applies each visit, which lifestyle-based vaccines are indicated, your state's rabies certificate rules, and local pricing. What you can do is ask for a written estimate covering the whole series rather than one visit, since a puppy starting at 6 weeks usually needs more visits than one starting at 11 weeks. If the cost is a barrier, the routes above are where to start. Our first-year puppy budget guide is where wider cost planning lives.

How do I know whether to watch, call, or go to an emergency clinic?

Three tiers, set out fully in the triage card above. Briefly: mild, short-lived tiredness or injection-site soreness is monitoring; hives, pain, non-increasing facial swelling, or signs that worsen or persist mean calling the clinic today; collapse, difficulty breathing, sudden forceful vomiting, drooling or diarrhea within minutes, increasing facial swelling, pale gums, weakness, shock or a seizure mean an emergency veterinary hospital straight away. Never wait it out, and never medicate at home.

Can I use this schedule for a kitten?

No. Feline vaccines target different pathogens, and the risk framework, product set and guideline sources all differ. Nothing in the table above transfers to a cat, and there is no kitten vaccine schedule on this page for that reason. Ask your veterinarian for a feline schedule. For general new-cat setup — not vaccination — our new kitten checklist may help, but it is not a feline vaccine schedule.

Your next three steps

Gather and photograph every vaccination record and rabies certificate you have, and note the clinic contact details and any appointment already booked. Then tell your veterinarian the things that change the plan: your puppy's age and health, any previous reaction, where you live, whether cost or transport is difficult, and whether boarding, daycare, classes, travel, tick country or other dogs are part of your next few months. Finally, ask the clinic to write down the individualized schedule — product, route, next due date, the rabies one-year booster date, and what to do if your puppy reacts — and save that written plan with the rest of the record. That document, not this page, is your puppy's schedule.

Sources and last verified date

Last verified: August 6, 2026

• 2022 AAHA Canine Vaccination Guidelines (updated 2024) — American Animal Hospital Association — core vaccine set for dogs, the 2024 leptospirosis core update, and guideline scope and industry support disclosure.
• 2022 AAHA Canine Vaccination Guidelines, full text — American Animal Hospital Association — maternal antibody timing for distemper and parvovirus, the 18-to-20-week finish where local risk is high, the rabies one-year booster and its purpose, jurisdictional variation and exemptions, leptospirosis risk profile and adverse-event rate, Lyme seroprevalence by state, rattlesnake toxoid evidence limits, Bordetella route and coverage, canine influenza routine-use position, and the titer-testing position.
• Recommendations for core and noncore canine vaccines (Table 2) — American Animal Hospital Association — core and non-core definitions, annual reassessment, endemic-region reclassification, and the overdue and unknown-history direction to consult the manufacturer and, for rabies, local law and the state veterinarian.
• Table 2: AAHA Core and Noncore Vaccines for Dogs, updated 2024 — American Animal Hospital Association — the dosing table itself: at least three core doses between 6 and 16 weeks two to four weeks apart, leptospirosis as core with two doses from 12 weeks, revaccination within one year then triennially, and non-core dosing by route.
• Postvaccination adverse events and reactions — American Animal Hospital Association — precautions after a previous reaction, the two-week interval when splitting visits, the caution against reduced-volume dosing, and individual-level rather than breed-level risk.
• From the Guidelines: Vaccination reactions — American Animal Hospital Association — typical minor postvaccination effects, and the position that combination vaccines do not inherently carry more adverse-event risk than single-component ones.
• Vaccine Recommendation Schedule Based on Age at Initial Vaccination and Lifestyle of Dog — American Animal Hospital Association — AAHA's lifestyle-based scheduling tool referenced for the risk conversation.
• 2024 Guidelines for the Vaccination of Dogs and Cats — WSAVA Vaccination Guidelines Group — maternally derived antibody and the window of susceptibility, the 6-to-8-week start and 2-to-4-week intervals, the 16-weeks-or-older dose, continuation to 20 weeks in high-risk situations, serology from 20 weeks or a core dose at or shortly after 26 weeks, canine core and non-core product tables including route-specific Bordetella instructions, respiratory and Lyme vaccine limitations, medical-record and certificate fields, shelter protocols, and support for careful early socialization.
• Updated ACVIM consensus statement on leptospirosis in dogs (Sykes et al., 2023) — Journal of Veterinary Internal Medicine — the independent expert-panel conclusion that all dogs are at risk regardless of signalment, geography, lifestyle and season, vaccination from 12 weeks, and continued infection in inadequately vaccinated dogs including those given two-serovar products in some regions.
• Information for Veterinarians: Rabies — U.S. Centers for Disease Control and Prevention — rabies vaccination according to local law and under veterinary supervision, variation by product and state, the 12-week minimum age guidance, the 28-day initial-immunization definition, and case-by-case handling of overdue animals.
• Compendium of Animal Rabies Prevention and Control, 2016 — National Association of State Public Health Veterinarians — the one-year booster after initial vaccination regardless of age or product, the absence of data supporting annual or biennial use of three-year products after the initial series, rabies serology not substituting for vaccination, Form 51 certificate requirements, licensure as a rabies-control tool, low-cost and free vaccination clinics, shelter adoption vaccination policy, interstate movement, and delayed vaccination in acutely ill animals.
• About State Public Health Veterinarians — National Association of State Public Health Veterinarians — the distinction between the state public health veterinarian, who works for the state health department on zoonotic disease, and the state veterinarian, who works for the state agriculture department.
• Health Department Directories — U.S. Centers for Disease Control and Prevention — routing to state, local and territorial health departments, where the state public health veterinarian sits.
• Canine parvovirus — American Veterinary Medical Association — the signs of parvovirus in dogs, the 6-to-20-week and incompletely vaccinated risk groups, the instruction to contact a veterinarian immediately, and the value of prompt intensive treatment.
• Canine distemper — American Veterinary Medical Association — the ocular, respiratory, gastrointestinal and neurological signs of distemper in dogs and the instruction to contact a veterinarian immediately.
• Canine influenza (CIV) updates — Cornell University College of Veterinary Medicine, Animal Health Diagnostic Center — current canine influenza circulation, cited by AAHA as the reference for deciding whether the vaccine is warranted.
• Immune System Responses in Dogs (Pet Owner version) — Merck Veterinary Manual — anaphylaxis as a rare, life-threatening immediate reaction, the signs listed for dogs, and vaccines among the possible triggers.
• Disorders Involving Anaphylactic Reactions (Type I Reactions, Atopy) in Dogs — Merck Veterinary Manual — the liver as the shock organ in dogs, gastrointestinal signs predominating over respiratory ones, and pale gums, cold limbs and a fast weak pulse.
• Adverse Event Reporting — USDA APHIS Center for Veterinary Biologics — the definition of an adverse event regardless of causation, the manufacturer reporting requirement, and the limits of what a report implies.
• Pharmacovigilance FAQ — USDA APHIS Center for Veterinary Biologics — day-of discomfort and lethargy, the recommendation to observe an animal for at least an hour after vaccination, and the reactions observed within a day and from a day to two weeks afterwards.
• Reporting adverse events — American Veterinary Medical Association — that an owner need not file separately when the veterinarian has reported the event.
• Selecting a Behavior Consultant — American Veterinary Society of Animal Behavior — what the veterinary behavior and behavior-consultant credentials mean and how to choose among them.
• Member search — American College of Veterinary Behaviorists — the directory of board-certified veterinary behaviorists, and ACVB's status as an AVMA-recognized veterinary specialty organization.
• Resources for pet owners — Humane World for Animals — the affordability resource set for owners struggling with veterinary costs, including the Pet Help Finder search for financially friendly veterinary providers and the note that nearby veterinary colleges may run assistance programs.

Next review: November 4, 2026