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Pet Vaccine Schedule
When's the next vaccine due? Calculate it from a birth date or last vaccine date.
Why the early vaccine visits matter
A puppy or kitten's immune system isn't fully developed in the first weeks of life, and maternal antibodies gradually fade — which is why several vaccine doses spaced a few weeks apart are needed to make sure full immunity actually develops, not just one shot.
What happens after the first year?
After the one-year booster, most core vaccines are repeated annually or every few years (depending on the vaccine and your vet's recommendation). For adult pets, this tool calculates the next annual booster based on the date of the last vaccine.
Frequently asked questions
What if I don't know my puppy or kitten's exact birth date?
Enter your best estimate — since vaccine windows span several weeks, being off by a few days won't meaningfully change the result.
Is this exactly what my vet will recommend?
Not necessarily — this is a common, general AAHA/AVMA-style core schedule. Some vets adjust intervals or add extra visits based on your region, local disease risk, or the specific vaccine brand used. Always confirm the final schedule with your veterinarian.
Why does the adult mode only show two reminders?
Because once the core series is finished, the pattern becomes simple and repeating (once a year) — to see reminders further out, just re-run this tool using the date of the next vaccine.
Should deworming be tracked like vaccines too?
Yes, deworming follows its own separate schedule (every 2 weeks until 12 weeks old, then monthly until 6 months, then every 3 months) — mentioned in the note below this tool, but the main table on this page covers vaccines only.