The dog vaccination schedule spans a puppy's first 16 weeks and then continues for life, with each vaccine running on its own booster cycle. The AAHA 2022 Canine Vaccination Guidelines define the dose counts, intervals and revaccination timings, and this guide lays out every number in order, from the first combination shot to the 3-year adult boosters, so the full dog vaccine checklist holds together across the years.
Which Vaccines Does Every Dog Need?
Every dog needs three core vaccines regardless of lifestyle: the distemper-adenovirus-parvovirus combination (DAP or DHPP), leptospirosis and rabies, according to the AAHA 2022 Canine Vaccination Guidelines. Core means the vaccine is recommended for every dog unless a specific medical reason rules out vaccination, and that reason is confirmed by a veterinarian.
The combination vaccine (DAP or DHPP) protects against canine distemper virus, adenovirus and parvovirus. Distemper attacks the respiratory, gastrointestinal and nervous systems and is frequently fatal. Adenovirus type 1 causes infectious hepatitis, while type 2 contributes to respiratory disease. Parvovirus destroys the intestinal lining and carries the highest fatality risk in puppies. Some formulations add parainfluenza virus, the second P in DHPP, for added respiratory coverage.
Leptospirosis is a bacterial infection spread through water and soil contaminated with urine from wildlife such as rats and raccoons. It damages the kidneys and liver, and it also spreads to people. The AAHA 2022 edition moved leptospirosis from noncore to core status, a change from earlier guideline editions, and specifies a killed 4-serovar vaccine for every dog.
Rabies is a fatal neurologic disease transmitted through the bite of an infected animal. It is the only dog vaccine mandated by law in the United States, which places it firmly among the core vaccines for dogs whatever their lifestyle.
What Is the Puppy Vaccination Schedule?
The puppy vaccination schedule covers ages 6 to 16 weeks and involves three vaccines: at least 3 doses of the combination vaccine spaced 2 to 4 weeks apart, 2 leptospirosis doses starting at 12 weeks, and 1 rabies dose as state law requires, per AAHA 2022 Table 2.
Combination vaccine (DAP or DHPP): AAHA 2022 Table 2 specifies at least 3 doses between 6 and 16 weeks of age, given 2 to 4 weeks apart. Most clinics vaccinate at around 8, 12 and 16 weeks, which fits the guideline intervals; the 8-12-16 pattern is the typical clinic approach, not a rule, and the exact weeks shift with the puppy's start age and the intervals the vet selects. The repeated doses cover the window when maternal antibodies fade and stop blocking the vaccine.
Leptospirosis: 2 doses given 2 to 4 weeks apart, with the first dose at 12 weeks of age.
Rabies: 1 dose on the timing state law requires, with products labeled for use from 12 weeks of age.
The table below summarizes the puppy shots schedule as a single dog vaccine checklist: each vaccine, the doses that build the puppy series, and the booster that follows.
| Vaccine | Puppy doses | Next booster |
|---|---|---|
| Combination (DAP or DHPP) | At least 3 doses between 6 and 16 weeks, 2 to 4 weeks apart | 1 booster within 1 year of the final puppy dose |
| Leptospirosis | 2 doses, 2 to 4 weeks apart, starting at 12 weeks | 1 booster within 1 year, then annually |
| Rabies | 1 dose from 12 weeks, as state law requires | 1-year or 3-year cycle, set by product and state law |
Lifestyle vaccines join the series when the vet and the puppy's exposure risk call for them, and those options are covered in the section below.
What Shots Does an Adult Dog Need After the Puppy Series?
An adult dog needs a combination vaccine booster within 1 year of the final puppy dose and then every 3 years, a leptospirosis booster every year, and a rabies booster on a 1-year or 3-year cycle set by the product and state law, per the AAHA 2022 guidelines.
Combination vaccine: one booster within 1 year after the final puppy dose, then one dose every 3 years. The 3-year interval matches the duration of immunity established for distemper, adenovirus and parvovirus.
Leptospirosis: one booster within 1 year after the puppy series, then annually for life. The bacteria circulate in wildlife populations year-round, so the protection requires yearly renewal.
Rabies: a 1-year or 3-year cycle depending on the labeled product and the state's rules. Because jurisdictions write their own requirements, the rabies due date comes from state law rather than a single national calendar, and the next section covers those rules.
Dogs starting late: a dog that receives its first combination dose after 16 weeks of age gets 2 doses 2 to 4 weeks apart instead of 3, then follows the same booster cycle as every other adult. Leptospirosis still requires its 2 initial doses 2 to 4 weeks apart before the annual cycle begins.
Annual wellness exams continue regardless of the vaccine interval. The vet checks weight, heart, teeth and overall condition at each exam, and confirms which of the different vaccine cycles falls due that year.
Which Dog Vaccines Depend on Lifestyle?
Four vaccines are noncore for dogs: Bordetella bronchiseptica, canine influenza in the H3N8 and H3N2 strains, Lyme disease and rattlesnake toxoid, per the AAHA 2022 guidelines. Noncore means the vet and owner select them together based on boarding, travel and regional exposure.
Bordetella bronchiseptica targets the most common bacterial cause of kennel cough. The injectable parenteral form requires 2 doses 2 to 4 weeks apart, while the intranasal and oral forms require a single dose. Boosters run annually for all three forms.
Canine influenza covers two strains, H3N8 and H3N2, in a 2-dose initial series spaced 2 to 4 weeks apart, followed by annual boosters. Bordetella and influenza are the two vaccines that boarding, daycare and grooming facilities most commonly require.
Lyme disease vaccine is for dogs with tick exposure in regions where the disease circulates. The initial series is 2 doses 2 to 4 weeks apart, with annual boosters after.
Rattlesnake toxoid is for dogs living or hiking in rattlesnake regions, and the vet sets the dose schedule for it.
Regional practice shifts these categories. A vaccine that is noncore nationally functions as core locally: veterinarians in the Northeast, where Lyme disease is endemic, treat the Lyme vaccine as routine for dogs in their area.
How Does State Law Affect the Rabies Schedule?
State law affects the rabies schedule because rabies is the only dog vaccine mandated by law, and each state and local jurisdiction writes its own rules. Timing, booster intervals and exemption processes all come from those jurisdictions rather than one national standard.
Some jurisdictions do not recognize 3-year products after year 1. In those places, an annual booster is required even when the vet administered a product labeled for 3 years, so the product choice and the local statute both shape the calendar.
Titer testing is not a legal substitute. A titer measures rabies antibodies in the blood and supports clinical decisions, but it does not satisfy legal vaccination requirements in place of a dose. Because the rules vary by state and even by county, the rabies due date on any checklist comes from the current local statute, confirmed with the vet at each visit.
How Do You Keep a Dog Vaccination Checklist on Track?
A dog vaccination checklist stays on track when each vaccine runs on its own cycle: leptospirosis every year, the combination vaccine every 3 years, rabies as state law requires, and lifestyle boosters such as Bordetella on their annual schedule.
Paper booklets fail at this job. Booklets get lost, pages fill, and nothing in a booklet sends a reminder. The dates also diverge fast across pets: one dog sits mid-cycle on the 3-year combination vaccine, another needs leptospirosis this month, and a boarding facility asks for proof of Bordetella the night before check-in. Memory does not hold dates like these; the cycles multiply past what a paper record manages.
güdpet tracks the schedule per vaccine. The app stores every dose date for each vaccine, sends reminders matched to each vaccine's cycle, and keeps puppy and adult records together in one profile. The record also travels: vets, sitters and boarding facilities see current vaccine status through Digital Pet ID, so proof is ready the night it is requested. Plan details and current pricing are on güdpet pricing. The güdpet features page lists the full set, and the guide on how to keep pet vaccination records online walks through the setup.
Frequently Asked Questions
What shots does a puppy need at 8, 12 and 16 weeks?
A puppy needs the combination vaccine at each of the 3 visits, leptospirosis added from 12 weeks, and rabies per state law at 12 to 16 weeks. The vet adds lifestyle vaccines such as Bordetella based on exposure risk. Starting the record at the very first visit keeps every dose documented from day one; the guide on how to keep pet vaccination records online covers the setup.
Does my dog need vaccines every year?
Leptospirosis is boosted annually, the combination vaccine moves to a 3-year cycle, and rabies follows a 1-year or 3-year cycle set by the product and state law. Only leptospirosis returns every year without exception. Tracking separate cycles per vaccine is the actual difficulty, and the guide on how to organize pet health records lays out a system that works.
Which dog vaccines are optional?
Four vaccines are optional: Bordetella, canine influenza, Lyme disease and rattlesnake toxoid. The vet decides with you based on boarding, travel and regional exposure. Boarding and daycare facilities ask for proof of Bordetella and influenza at check-in, and a digital pet ID keeps that proof on hand.
What happens if I miss a booster appointment?
Call the vet; resuming depends on the length of the gap and the vaccine involved. A dog with a visible dose history lets the vet choose the right restart protocol quickly. The güdpet features include per-vaccine dose logs that put that history on screen during the call.
Do senior dogs still need vaccinations?
Yes, booster cycles continue for life. The vet adjusts vaccine choices for the dog's health status at annual exams, but leptospirosis stays annual, the combination vaccine stays on its 3-year cycle and rabies stays legally required. Keeping a lifetime of doses organized is easy; güdpet pricing shows every plan and sign up option.
Keep the whole dog vaccination schedule in one place. güdpet stores every dose date per vaccine, sends reminders matched to each cycle and shares current status with vets, sitters and boarding facilities through Digital Pet ID. Compare plans and sign up on güdpet pricing; the güdpet features page lists everything included.
