KittenSchedule › Kitten schedule by age
Kitten schedule by age: the master timeline
Vaccines on one clock, deworming on another, meals on a third, spay/neuter looming somewhere around month five. This page stacks every kitten timeline by age so you can see what's due now and what's next — it's the skeleton of what the KittenSchedule app generates automatically from a birth date.
8–12 weeks: the settling-in window
- Vet: FVRCP dose 1 (6–8wk, often done before homecoming — check paperwork) and dose 2 (10–12wk); FeLV dose 1; deworming every 2 weeks; fecal exam; FeLV/FIV test. Details: vaccine schedule.
- Food: four small meals a day of kitten formula (feeding schedule).
- Behavior: safe-room start, litter box mastery, daily gentle handling, carrier-as-furniture. The peak socialization window for kittens is early (roughly 2–7 weeks, mostly before you get them) — but positive handling now still shapes the adult cat enormously.
- Sleep: kittens sleep 16–20 hours a day. A kitten that vanishes for hours is usually napping in the one spot you didn't check.
12–16 weeks: the locking-in window
- Vet: final FVRCP at 14–16 weeks (the most important dose), FeLV dose 2, and rabies in the 12–16 week window per local law. Deworming shifts from biweekly to monthly at 12 weeks.
- Teething: adult teeth start arriving around 3–4 months — expect chewing; offer appropriate targets, protect cords.
- Play: energy climbs steeply. Two or three structured wand sessions a day, always ending in a catch, beats ambient chaos — and a played-out kitten sleeps through more of the night.
- House access: most kittens have graduated from the safe room to supervised whole-house access by now (checklist has the progression).
4–6 months: the adolescent ramp
- Spay/neuter: the headline event — many vets recommend by 5–6 months, before the first heat (which can arrive surprisingly early). If it's not booked, book it.
- Vet: monthly deworming continues to 6 months; microchip if not already done.
- Food: drop to three meals; watch body condition after spay/neuter — calorie needs fall while appetite doesn't.
- Teething peaks around 4–5 months; adult teeth are typically in by 6–7 months.
- Behavior: boundary-testing, counter-surfing, 3am parkour. Normal adolescence. Reward what you like, make what you don't like boring, and keep the play sessions structured.
6–12 months: looks like a cat, still a kitten
- Food: two meals a day; stay on kitten formula until about 12 months, then transition to adult food over 7–10 days per your vet.
- Vet: ongoing parasite prevention per your vet; periodic fecal checks.
- Growth: most cats reach near-adult size by 10–12 months (large breeds like Maine Coons keep going much longer); energy stays kitten-grade well into year two.
How to actually use this timeline
Don't try to memorize it. Pick the three dates that are easy to lose — the final 14–16 week vaccine dose, the switch from biweekly to monthly deworming at 12 weeks, and the spay/neuter target around month five — and put them in your phone's calendar the day your kitten comes home, calculated from the birth date. Everything else hangs off vet visits you'll already be attending. That birth-date-to-calendar conversion is exactly what the KittenSchedule app automates; until then, two minutes with a calendar app covers the dangerous gaps.
~12–16 months: graduation
The one-year visit closes the kitten chapter: FVRCP booster, rabies booster per local law, FeLV booster if your vet's risk assessment calls for it, the adult-food switch, and an adult wellness baseline. From here it's annual checkups and a cat that sleeps 15 hours a day on the warm spot you wanted. The fridge copy of all of the above is the printable vaccine chart.
Frequently asked questions
When should kittens be spayed or neutered?
Many vets recommend by 5–6 months, before the first heat — but timing varies with health and circumstances, so set the date with your vet at an early vaccine visit and put it on the calendar.
How much do kittens sleep?
16–20 hours a day is normal throughout kittenhood. Deep growth-spurt sleeping is healthy; a kitten that's lethargic while awake — not playing, not eating — is a different thing and worth a vet call.
When do kittens calm down?
Gradually through the second year. The wildest stretch is usually 4–10 months; structured daily play sessions (ending in a catch) and predictable routines smooth it considerably.
When is a kitten fully grown?
Most cats reach near-adult size around 10–12 months, which is also the typical adult-food switch point. Large breeds like Maine Coons continue growing well past a year.
A note from us: Always confirm timing with your veterinarian — schedules vary by region, breed, and health. KittenSchedule is a planning tool, not a substitute for veterinary care.
Get your kitten's schedule built for you
The KittenSchedule app is coming soon — join the waitlist and get the schedule generated for your kitten automatically.