The Puppy Vaccination Schedule, Plainly Explained

Why a series, not a single shot

Puppies are born with some immunity from their mother's milk, but it fades at an unpredictable age. Vaccines are given as a series a few weeks apart so that as the mother's protection wears off, the vaccine takes over without leaving a dangerous gap.

The core diseases

Core puppy vaccines protect against serious, often fatal illnesses — distemper, parvovirus, and hepatitis among them, plus rabies where required by law. Parvovirus in particular is a brutal, common killer of unvaccinated puppies, which is why finishing the course matters so much.

Mind the gap

Until the final vaccine in the series has taken effect, a puppy isn't fully protected. Avoid dog parks, communal pee spots and unknown dogs during this window — but don't isolate your puppy entirely, since gentle, safe socialisation is also vital. Carry them and invite vaccinated friends over.

After the puppy series

Your vet will set booster timing based on the vaccine and your dog's lifestyle rather than a blanket yearly rule. Keep the record card safe — boarding kennels, groomers and travel often ask for it. An annual check-up remains worthwhile even when no shot is due.