Dog and Cat Vaccination Schedule: Core Vaccines, Boosters, and What You Need to Know
Vaccines are one of the most effective tools in veterinary medicine. They protect your dog or cat from diseases that were once common killers — diseases that, in some cases, still circulate widely today. Yet many pet owners are unsure which vaccines their pet actually needs, how often boosters are required, and what happens if a dose is missed.
This guide explains the core vaccines for dogs and cats, how an initial series works, when boosters are typically due, and what to expect in specific situations like travel or boarding. The most important thing to keep in mind throughout: your veterinarian will create the exact protocol for your individual pet. What follows is an educational overview — not a substitute for professional veterinary advice.
⚠️ Veterinary disclaimer: Vaccination protocols vary by region, lifestyle, age, health status, and individual risk assessment. The schedules described here are general illustrations. Always follow the specific protocol recommended by your licensed veterinarian.
Why Vaccination Matters
Infectious diseases like parvovirus in dogs and panleukopenia in cats can be fatal, especially in young or unvaccinated animals. Vaccines work by training your pet's immune system to recognize and fight specific pathogens, so that if your pet is ever exposed, their body can respond quickly before the disease takes hold.
Beyond protecting individual animals, vaccination contributes to herd immunity — the broader population-level resistance that makes outbreaks less likely. Rabies vaccination is also a public health matter in many countries, since rabies is transmissible to humans and is almost universally fatal once symptoms appear.
The scientific consensus supporting core vaccine safety and efficacy is robust and well-established. Serious adverse reactions to properly administered vaccines are rare, and the risk they pose is far lower than the risk of the diseases they prevent.
Core Vaccines for Dogs
Veterinary guidelines generally divide vaccines into core (recommended for all dogs regardless of lifestyle) and non-core (recommended based on risk factors like geography, lifestyle, or boarding).
Core dog vaccines
Distemper, Hepatitis, Parvovirus (often given in a combined DHPPi or similar formulation)
These three diseases together account for a large proportion of preventable canine deaths worldwide. Distemper affects the respiratory, gastrointestinal, and nervous systems. Parvovirus causes severe hemorrhagic gastroenteritis and is particularly deadly in puppies. Hepatitis (infectious canine hepatitis, caused by adenovirus type 1) attacks the liver.
Rabies
Required by law in many countries and regions. Rabies is invariably fatal once symptomatic in mammals and is a zoonotic disease (transmissible to humans).
Common non-core vaccines for dogs
- Bordetella bronchiseptica (kennel cough) — frequently required by boarding facilities and groomers
- Leptospirosis — recommended for dogs with outdoor exposure, particularly near water or wildlife
- Lyme disease — relevant in tick-endemic regions
- Canine influenza — in areas or situations with outbreak risk
Core Vaccines for Cats
Core cat vaccines
Feline Herpesvirus, Calicivirus, and Panleukopenia (often combined in an FVRCP or "triple" vaccine)
Feline panleukopenia (also called feline distemper) is a highly contagious and often fatal disease, particularly in kittens. Herpesvirus and calicivirus are leading causes of upper respiratory infections in cats.
Rabies
As with dogs, rabies vaccination is legally required in many jurisdictions and is always considered core.
Common non-core vaccines for cats
- Feline leukemia virus (FeLV) — strongly recommended for outdoor cats or cats with contact with other cats; considered core by some guidelines for all kittens
- Feline immunodeficiency virus (FIV) — available in some regions
The Puppy and Kitten Primary Series
Young animals receive maternal antibodies through their mother's colostrum (first milk). These antibodies provide some protection in the first weeks of life but gradually wane — and while they are active, they can also partially block the immune response to a vaccine. The timing challenge is that maternal antibody levels vary between individuals, so we cannot know exactly when an individual puppy or kitten has lost enough maternal protection to respond fully to a vaccine.
The solution veterinarians use is a series of injections, spaced several weeks apart, that overlap with the window when maternal antibodies fade. By giving multiple doses, the protocol captures the period when the young animal's own immune system becomes fully responsive.
A typical illustrative puppy schedule looks something like this (exact ages and spacing vary by product, region, and veterinary guidance):
| Approximate age | Vaccines typically given |
|---|---|
| 6–8 weeks | First combination (DHPPi or similar) |
| 10–12 weeks | Second combination; first Leptospirosis; Bordetella if indicated |
| 14–16 weeks | Third combination; second Leptospirosis; Rabies (timing varies by region) |
| 12–16 months | First adult boosters across all core vaccines |
For kittens, a similar series applies, typically beginning at 6–8 weeks for the FVRCP combination and rabies, with boosters at 3–4 week intervals until 16 weeks of age.
This table is for illustration only. Your vet will prescribe the schedule that fits the specific vaccines available in your area, your pet's age and health at the first visit, and your region's regulations.
Adult Booster Schedule
Once the primary series is complete, adult animals require periodic boosters to maintain immunity. The frequency depends on the vaccine and the manufacturer's data:
- Some core vaccines (notably the DHPPi combination in dogs) have been shown in duration-of-immunity studies to provide protection for three or more years, and many vets now administer them triennially in low-risk adult dogs.
- Other vaccines, particularly Leptospirosis and Bordetella, are typically repeated annually because immunity duration is shorter.
- Rabies booster frequency varies by local regulation — annual in some jurisdictions, every three years in others.
Titer testing (measuring antibody levels in the blood) is an option that some owners and vets use to assess whether a booster is needed for certain core vaccines rather than vaccinating on a fixed schedule. This is worth discussing with your veterinarian.
Special Situations
Boarding and grooming
Most reputable boarding kennels and grooming salons require proof of core vaccination plus Bordetella (kennel cough) for dogs, and core vaccination plus FeLV for cats. Check requirements well in advance — some facilities require the Bordetella vaccine to have been given at least 48–72 hours before arrival to allow the immune response to build.
Travel
International travel with pets involves specific health certificates, vaccine requirements, and sometimes mandatory waiting periods. Rabies vaccination must typically be current, and some countries require a rabies antibody titer test as well. Requirements differ enormously between destinations — check with your veterinarian and the official veterinary authority of your destination country well before your planned travel date. Arrangements often need to be made months in advance.
Unvaccinated adult animals
Adult dogs and cats being vaccinated for the first time follow a compressed version of the puppy/kitten series — typically two doses of core vaccines a few weeks apart — since they no longer carry interfering maternal antibodies. Your vet will advise on the appropriate protocol.
Missed boosters
If a booster is overdue, your veterinarian will assess whether a single catch-up dose is sufficient or whether a partial series restart is needed. This depends on how long the lapse has been and which vaccine is involved. Do not simply assume protection has lapsed completely — but do not assume it is still fully active either. A conversation with your vet is the right move.
How to Keep Track of Your Pet's Vaccination Schedule
Vaccination schedules span years and involve multiple products with different booster frequencies. It is genuinely easy to lose track — especially if you have more than one pet, if you move house, or if you change veterinary practices.
A few habits make this much more manageable:
Keep an official vaccination booklet or certificate. In many countries this is issued by your vet and serves as the legal proof required for travel, boarding, and re-entry. Keep it somewhere safe and bring it to every appointment.
Set reminders well in advance. A reminder that fires two weeks before a booster is due gives you time to book an appointment. A reminder that fires the day something was due is just a stressor.
Centralize all your pets' records in one place. If you have a dog and two cats, juggling three sets of dates in your head — plus the rest of life — is a recipe for missed boosters.
FamilyPet+ is designed for exactly this. The app stores each pet's vaccination history, sends automatic reminders when a booster is coming up, and lets you share the record with your whole family in real time. Whether you have a dog, a cat, or an exotic pet, everything lives in one place and exports as a PDF you can hand directly to your vet.
Store every vaccine date, get automatic booster reminders, and share your pet's full vaccination record with family and your vet — all from one app.
Get it on Google PlayFAQ
How do I know if my puppy or kitten has completed their primary series?
Your vet will document each injection in a vaccination booklet or on a certificate. The primary series is typically considered complete after the final dose is given at or after 16 weeks of age (for both puppies and kittens). If you adopted your pet and are unsure of their history, bring whatever records you have to your vet — they can advise on whether a partial or full series is needed.
Is it safe to take my puppy outside before vaccinations are finished?
This is a genuine balance between socialization (critical in the first 12–16 weeks) and disease exposure risk. Many vets recommend carefully chosen exposures — private gardens of fully vaccinated dogs, puppy socialization classes with vaccination requirements — before the primary series is complete. Avoid high-risk environments like dog parks or areas frequented by unknown dogs until vaccination is finished. Discuss the specific risk profile in your area with your vet.
Can indoor cats skip vaccinations?
Even strictly indoor cats should receive core vaccines. Indoor cats can escape briefly, come into contact with a new cat, or be inadvertently exposed through you (some viruses can be carried on clothing). FeLV vaccines may be less critical for cats with truly zero contact risk, but rabies vaccination requirements are set by local law, not by lifestyle. Your vet can advise on what makes sense for your cat specifically.
What should I do if my pet has a reaction after vaccination?
Mild lethargy, soreness at the injection site, or a low-grade fever for 24–48 hours can be normal. Contact your vet if your pet seems very unwell, develops significant facial swelling or hives, vomits repeatedly, collapses, or has difficulty breathing — these may indicate a rare allergic reaction that requires prompt attention. If a previous vaccine caused a reaction, always tell your vet before any future vaccination.
Does my rabbit, bird, or exotic pet need vaccines?
Vaccination recommendations for exotic pets differ significantly from those for dogs and cats. Rabbits in several European countries, for example, are routinely vaccinated against myxomatosis and rabbit hemorrhagic disease. Birds, rodents, and reptiles have different (and in many cases no approved) vaccine protocols. Consult a veterinarian with experience in exotic species for advice specific to your animal.