First year kitten guide: month-by-month care, health & vaccines

Before you bring your kitten home

Most kittens come home at 8 weeks or later, and many breeders keep them a few weeks longer. There is a reason: kittens are typically fully weaned at about 8 weeks, according to VCA Animal Hospitals, and the weeks with their mother and littermates are when they learn how to be a cat. A kitten separated too early often grows into an anxious adult.

A week before pickup, do three things.

Kitten-proof your home. Kittens climb, squeeze, and chew things you did not think were chewable. Walk every room and check for: loose cords, houseplants (lilies, especially Easter, Tiger, and Asiatic, are highly toxic to cats and lily ingestion needs emergency vet contact within hours per the ASPCA toxic plants list), small objects that fit in a mouth, unsealed food, open toilets, and anywhere a kitten could squeeze behind and get stuck.

Stock the basics. You do not need a pet-store spree. You need: a litter box (one per cat plus one extra, ideally), unscented clumping litter, food and water bowls on separate stations, the same food the breeder or shelter has been using, a scratching post (vertical AND horizontal), a carrier for vet visits, a couple of small toys, and a soft bed in a quiet spot.

Book the first vet visit. Most shelters and breeders require a visit within the first week. Book it before pickup so the slot is yours.

Save every piece of paper the breeder or shelter gives you. Vaccination records. Deworming dates. Microchip number. You will need them all at the first vet visit, and again a year from now.

Weeks 1 to 4 at home

The quiet first week

Kittens adjust fast but not instantly. The first 48 hours your kitten may hide. Let them. Put food, water, and a litter box in a small room (a bathroom works), and let them come out in their own time. Sit quietly on the floor of that room several times a day. The kitten comes to you.

Food

Feed kitten-formula food (higher protein and fat than adult food) at least four times a day at 8 to 12 weeks, then at least three times a day until six months (International Cat Care). VCA Animal Hospitals says most kittens do best on 3 to 4 small meals or more a day. Use the same food the breeder or shelter used for at least the first week. If you want to switch, do it gradually, over 7 to 10 days (2021 AAHA/AAFP Feline Life Stage Guidelines).

Fresh water always available. Some cats drink more from a fountain. Not essential.

Kitten nutrition is its own topic. See our kitten food guide for wet vs. dry, calorie targets, and feeding schedule by age.

Litter training (usually already learned)

Most kittens already know how to use a litter box by the time you get them. Your job is to make the box easy to find (same room the first week), keep it clean (scoop daily), and use a litter type the kitten is already used to if you know what the breeder used.

If your kitten has an accident outside the box, do not punish. Clean with enzymatic cleaner. Ask: is the box clean enough, big enough, private enough, and easy to reach? Nine out of ten accidents come back to one of those four.

First vet visit

Your vet will check for congenital issues, confirm vaccinations, start parasite prevention, and answer questions. Bring all the paperwork. Write down your questions in advance.

See the first vet visit checklist for kittens for what to bring, what questions to ask, and what symptoms to flag.

Handling and bonding

Pick your kitten up gently, daily. Handle paws, ears, mouth, and belly for a few seconds at a time, always followed by a treat or a chin scratch. This makes vet visits easier for the rest of your cat’s life.

The indoor-or-outdoor decision

Unlike puppies, this is the single biggest lifestyle choice you will make in your kitten’s first year, and it is often decided in the first few weeks by default. Take the decision deliberately.

Indoor-only cats live longer on average: a UC Davis School of Veterinary Medicine study of more than 3,100 cats found that outdoor-only cats had a shorter lifespan. They are safer from traffic, disease, and predators. They also need more enrichment from you: vertical climbing space, play sessions, window perches.

Outdoor-access cats express more of the natural range of cat behavior and are often less bored. They are exposed to traffic, fights, disease, getting lost, and killing wildlife. Some regions legally restrict free-roaming cats.

Middle options exist: catios (enclosed outdoor spaces), leash training, supervised garden time, cat wheels for indoor exercise. We have a deeper post on the indoor vs outdoor decision if you want the full framework.

There is no universally right answer. The right answer depends on where you live, your home setup, and your kitten. Make the decision on purpose, and if you choose outdoor-access, microchip and neuter early.

Months 2 to 4: vaccines, litter, scratching

Vaccines

The core vaccine series (FVRCP) starts no earlier than six weeks and runs every three to four weeks until 16 to 20 weeks of age, according to the AAHA/AAFP Feline Vaccination Guidelines. The same guidelines treat FeLV as core for kittens under one year, and rabies follows local law. Your vet will guide timing. See the Health section below, or the full kitten vaccination schedule for core vs. non-core vaccines and country-specific differences.

The scratching post war

Your kitten will scratch something. Your job is to make the scratching post more appealing than your couch.

• One vertical post (tall enough for a full stretch) AND one horizontal surface (cardboard scratcher works).
• Place them in high-traffic cat areas (not in the basement).
• Sprinkle a little catnip on them the first week.
• When your kitten scratches furniture, move them gently to the post and reward.
• Do NOT declaw. It is an amputation, not a nail trim, and it is banned or restricted in most of Europe and a growing number of US states. Both the AAFP and the AVMA declawing position statement discourage routine declaw, recommending behavioral and environmental alternatives instead.

Litter box as the cat grows

As your kitten grows, upgrade the box size. An adult cat needs a box about 1.5 times their body length. Too-small boxes are the most common cause of accidents.

Months 4 to 6: spay or neuter, adolescence

Spay or neuter

The Veterinary Task Force on Feline Sterilization recommends spaying or neutering by five months of age, before the cat reaches sexual maturity. Some shelters have already done this before pickup. If not, your vet will discuss timing.

Spayed or neutered cats are calmer, roam less, mark less, and live longer on average. Per VCA Animal Hospitals, spaying before the first heat cycle sharply reduces the lifetime risk of mammary cancer; neutering reduces testicular cancer risk to zero plus reduces roaming and marking behavior. Unless you are a licensed breeder, this is a straightforward yes.

Adolescent chaos

Between four and nine months, your kitten will try to climb curtains, knock things off tables (yes, on purpose), and zoom around at 3am. This is the cat equivalent of puppy adolescence. It passes.

Channel the energy with two 10-minute play sessions per day using wand toys (not hands, or your adult cat will still bite hands). A tired cat is a less destructive cat.

Months 6 to 9: the teenage cat

By six to nine months your kitten looks almost adult. The body is still filling out, especially in the largest breeds, such as the Maine Coon and the Ragdoll, which keep growing for longer.

• Feeding stays on kitten food until about twelve months, at two or more meals a day from six months (International Cat Care). The largest breeds keep growing for longer, and your vet decides what that means for their food.
• A vet checkup around six months is a good idea. The AAHA/AAFP guidelines suggest considering the first FVRCP booster at six months rather than at one year.
• If your cat goes outside, this is when roaming ranges expand. Microchip and collar with ID tag non-negotiable.

Months 9 to 12: approaching the adult cat

The wild kitten energy starts to settle around nine to twelve months. Your cat develops its adult personality: chatty or quiet, lap cat or independent, hunter or couch cat. You will not fully know who they are until around year two.

At twelve months:

• Transition from kitten food to adult food gradually, over 7 to 10 days.
• Book the first annual vet visit.
• Vaccines and boosters updated.
• Weight check (indoor cats especially are prone to creeping weight gain).

First year health: the quick reference

Everything here is general guidance. Specifics come from your vet.

Vaccines (typical US schedule)

• 6 to 8 weeks: FVRCP #1 (feline viral rhinotracheitis, calicivirus, panleukopenia). Often given before pickup.
• 10 to 12 weeks: FVRCP #2. FeLV #1 (core for kittens under one year).
• 16 to 20 weeks: final FVRCP dose. FeLV #2. Rabies between 12 and 16 weeks where the law requires it.
• 6 months: first FVRCP booster, which the guidelines suggest considering at this age rather than at one year.
• 12 months: Rabies booster. FeLV booster.

Schedules above follow the 2020 AAHA/AAFP Feline Vaccination Guidelines, the cat-specific US standard, and the international WSAVA Vaccination Guidelines for Cats and Dogs. UK and EU: same core viruses, different brand names, different rabies rules (rabies is not routine for domestic cats in the UK), and the first booster is usually given one year after the kitten course: see the UK and EU first-year guides.

Parasite prevention

Monthly flea and tick prevention, especially for outdoor-access cats. Deworming runs in phases: the Companion Animal Parasite Council advises every two weeks until about 8 weeks of age, then monthly, so ask your vet where your kitten is in that schedule. That is the US routine: UK and EU worming schedules differ (see the UK and EU guides). Indoor-only cats still need fleas and worms covered, just at lower intensity.

Dental

Start brushing early if you can, even just weekly with a soft finger brush and cat-safe toothpaste. Dental disease is one of the most common and preventable health issues in adult cats.

Microchip

Non-negotiable for outdoor-access cats. Strongly recommended for indoor-only (cats escape more than owners expect). Usually done at spay or neuter.

How Flok does it

Full disclosure: we make a pet care app.

Here is why.

Scan with your iPhone camera to get Flok.

Cats are low-maintenance until they are not. You will forget the date of the last vaccination. You will lose the folder of shelter paperwork. You will notice your cat eating less and not remember when exactly it started.

Records keeping pays off through your kitten’s lifetime. See how to organize pet records for the framework, or Flok’s pet records feature for the tool.

That is what Flok is for. Snap a photo of a vet paper, confirm what Flok read, and the record is filed under your kitten. Flok sends vaccine and care reminders. A weekly check-in, about a minute, builds a record of how your cat is doing, which helps when something seems off and your vet asks “how long?”.

Android is on the way.