Dog vaccination schedule: what your dog needs and when

Vaccination is the part of dog ownership with the least room for improvisation. The schedule exists because immunity is built in layers, and each layer has a time window. Miss the window and, in the worst case, you're not topping up protection — you're starting over.

The puppy series: three visits that do the heavy lifting

Standard veterinary guidelines build puppy immunity across three to four visits:

• 6–8 weeks: first core combination vaccine (distemper, parvovirus, adenovirus/hepatitis — often labelled DHP or DAPP).
• 10–12 weeks: second core dose. Depending on your region, leptospirosis often starts here.
• 14–16 weeks: final core dose. The last parvo dose at 16 weeks or later matters, because maternal antibodies can neutralise earlier doses in some puppies.
• 12–16 weeks: rabies, where required by law — which is most of the world, and mandatory for any cross-border travel.

Why three doses of the same thing? Puppies are born with maternal antibodies that fade at unpredictable rates. Each dose is an attempt to catch the moment the puppy's own immune system can respond. The series exists because that moment can't be measured cheaply — so the schedule brackets it.

The first adult booster: the one everyone remembers

One year after the puppy series, your dog gets a full booster. This visit consolidates the puppy immunity into long-term protection. Vets rarely see this one missed — new owners are still in appointment-making mode.

Adult boosters: the ones everyone forgets

Here's where schedules quietly fall apart. Adult dogs typically need:

• Core combination (DHP): every three years in most modern protocols.
• Leptospirosis: every year — its immunity is genuinely short-lived.
• Rabies: every one to three years depending on the vaccine and local law.
• Kennel cough (Bordetella): every 6–12 months if your dog boards, attends daycare, or socialises heavily.

Notice the trap: different vaccines on different cycles. A three-year interval is almost impossible to hold in your head, and a yearly lepto shot due in a different month than the rabies booster is how gaps happen. When a core booster lapses far enough, many vets will recommend restarting a two-dose primary course — twice the visits, twice the cost, entirely avoidable.

Non-core vaccines: lifestyle decisions

Depending on region and lifestyle, your vet may recommend vaccines for Lyme disease, parainfluenza, or canine influenza. These are genuine conversations to have rather than defaults — the right answer depends on ticks in your area, boarding habits, and travel.

Travelling with your dog: where timing becomes law

Vaccination timing stops being advice and becomes regulation the moment you cross a border. For EU pet passports, the rabies vaccination must be administered at least 21 days before travel, and the dog must be microchipped before (or at the same time as) the vaccination — a rabies shot given before the chip doesn't count, which surprises owners every summer. Let the rabies booster lapse even by a day and, for travel purposes, you're treated as unvaccinated: a new shot, a new 21-day wait, and possibly a cancelled trip. If you travel with your dog even occasionally, the rabies next-due date is the single most consequential date in your calendar.

Turning a schedule into a system

The vaccination schedule isn't hard to understand. It's hard to carry — across years, multiple cycles, and possibly multiple dogs. The reliable fix is externalising it: one place where every pet's dates live, with reminders that arrive before the due date rather than a vague sense of "we're probably fine."

Tailtend was built for exactly this shape of problem: log each vaccine with its interval once, and the app counts down, reminds you, and reschedules when you mark it done. Pair it with your flea schedule and you've covered the two most commonly missed categories of preventive care.

One honest caveat: schedules vary by country, vaccine brand, and your dog's health history. Use this article to understand the structure — and your vet to set the exact dates.