Puppy Vaccination Schedule: Which Shots Your Dog Needs
By Whole Dog Journal | Published: 2026-10-15
Category: Consigli e cura
A practical FAQ on the puppy vaccination schedule, core vs non-core vaccines, side effects, and adult boosters, with a simple rule for deciding what your dog really needs.
Quick answer
Puppies need a series of core vaccines starting at 6 to 8 weeks, repeated every 2 to 4 weeks until they are at least 16 weeks old. Core vaccines are for diseases that are common, serious, and easily spread; non-core vaccines depend on your dog's lifestyle and risk. Adult dogs need boosters based on the vaccine, not a blanket yearly schedule.
Why puppies need a series, not a single shot
Puppies get temporary protection from their mother's milk, but that protection fades at an unpredictable time. A single vaccine given while maternal antibodies are still high may be blocked entirely. The series is designed to catch the window when the puppy can respond. That is why the final dose at 16 weeks or older matters most, even if earlier doses were given on time.
Core vs non-core: what the labels mean
Core vaccines protect against diseases that are widespread and dangerous: distemper, parvovirus, adenovirus (hepatitis), and rabies. Non-core vaccines, such as leptospirosis, Lyme, Bordetella, and canine influenza, are for dogs with specific exposure risks. A dog who never leaves a fenced yard has a different risk profile than one who hikes, boards, or competes. Your veterinarian should recommend non-core vaccines only after asking about those exposures.
Side effects: what is normal and what is not
Mild lethargy, tenderness at the injection site, and a low appetite for a day are common. Facial swelling, hives, vomiting, or difficulty breathing are not normal and need immediate veterinary care. If your dog has had a reaction before, tell your vet before the next vaccine so they can adjust the plan.
Adult boosters: timing over habit
Rabies boosters follow local law, often every one to three years. For other core vaccines, many veterinarians now use antibody testing or extended intervals instead of automatic yearly shots. The right interval depends on the vaccine, your dog's age, and local regulations, so ask for a plan rather than accepting a default.
Puppy vaccination questions owners ask most
- When should a puppy get their first shots?
- Most puppies start core vaccines at 6 to 8 weeks of age, then repeat every 2 to 4 weeks until at least 16 weeks. The exact start depends on the mother's vaccination history and the puppy's health. Book the first visit as soon as you bring the puppy home, and keep the series on schedule.
- Which vaccines do dogs need if they never leave the yard?
- Core vaccines still apply because diseases like parvovirus can arrive on shoes, tires, or wildlife. Non-core vaccines are usually unnecessary for a dog with no exposure to other dogs, ticks, or standing water. Core for all dogs; non-core only after a real risk conversation.
- Can I test instead of automatically boosting?
- Antibody testing can show whether a dog still has protective levels for some core diseases. It is not available or accepted for every vaccine, and rabies is governed by local law. Ask which vaccines can be titered and which must follow the legal schedule.
- What should I watch for after a vaccine?
- Mild sleepiness or soreness for a day is common. Hives, swelling, repeated vomiting, or trouble breathing are emergencies. Note the vaccine and the reaction so your vet can adjust future doses. When in doubt, call the clinic rather than waiting it out.
A resource for vaccine decisions
- Vaccinating Your Dog (or Puppy): Vaccinating Your Dog (or Puppy) is an updated ebook from Whole Dog Journal that covers when core vaccines are needed, why puppies wait, how to prevent over-vaccination, when some non-core vaccines are not necessary, and one test to insist on before vaccination. If you want to walk into your vet visit with specific questions instead of accepting a default schedule, this gives you the vocabulary and the one test to ask about.
