Kittens get a series of shots instead of one. Here is how the series relates to the kennel's age rule, in plain terms.
The kennel's rule
Cats must be 16 weeks old before the first day of the stay and have received all the recommended vaccinations for their age. The cat list is rabies and FVRCP. The kennel needs the record in hand, current through the last day of the stay.
The kennel does not give vaccines, and it does not decide what a kitten needs. It reads the record and checks the dates. If a kitten's last dose is very recent, send the record at once so the booking request can be handled with the right dates in front of the staff.
How the series works
Feline vaccination guidelines from the American Association of Feline Practitioners and the American Animal Hospital Association describe the FVRCP series for kittens as a set of doses starting at around 6 to 8 weeks and repeated every 3 to 4 weeks until the kitten is about 16 weeks old or older. The Cornell Feline Health Center covers the vaccines as part of basic kitten care. Rabies vaccination is usually given around the same age range, according to the product used and your vet. The exact plan is your veterinarian's decision, not the kennel's.
Some kittens are adopted from shelters or rescues with a partial record. In that case, ask your veterinarian to review what was given, fill any gap, and write one clear record. A mixed set of papers from several sources is harder to read than a single printout from one clinic.
Why 16 weeks
Sixteen weeks is the age at which a kitten has normally finished its first vaccine series, and the kennel's rule applies to dogs as well. It keeps young animals from a group setting before they are protected. A kitten that has not finished its series can wait until it has.
Planning a first stay
Ask your veterinarian for a printed record after the last kitten dose, check the dates against your trip, and send it through ProPetware. Read about FVRCP and cat rabies, then see the cattery and the first-time cat boarding guide.
Two cats can share a condo or tower at a lower second-cat rate on the 2026 rates; the multi-cat page explains.