When should a kitten get its first vaccines and how many rounds does it need?

Core kitten vaccines typically start between 6 and 8 weeks of age and are given as a series of boosters roughly every 3 to 4 weeks until the kitten is about 16 weeks old, because maternal antibodies can block earlier doses from working (American Animal Hospital Association, 2020). The core series covers feline panleukopenia, herpesvirus, and calicivirus, usually combined into a single FVRCP shot, plus a rabies vaccine required by law in most U.S. states and typically given at or after 12 weeks (American Veterinary Medical Association, n.d.). Kittens with any outdoor access or exposure to cats of unknown status should also be tested for feline leukemia virus and vaccinated before 16 weeks, since young kittens are far more likely than adult cats to develop a persistent FeLV infection after exposure (Cornell Feline Health Center, 2021).

Missing a booster in the series is one of the most common reasons the vaccines fail to fully protect a kitten, since maternal antibody levels vary kitten to kitten and a single dose rarely closes the immunity gap on its own. Veterinary guidelines from the American Association of Feline Practitioners recommend a final core booster at 16 to 20 weeks specifically to cover kittens whose maternal antibodies persisted longer than average (AAFP, 2020).

How often does a kitten need to be dewormed, and why so frequently?

Roundworms and hookworms are extremely common in kittens, in part because roundworm larvae can be transmitted through a mother cat's milk, so most parasitology guidelines call for deworming every 2 weeks starting at 3 weeks of age until 8 weeks old, then monthly until 6 months (Companion Animal Parasite Council, 2023). Because Toxocara cati (feline roundworm) is also a recognized cause of human toxocariasis, the CDC lists young kittens as a priority group for deworming to reduce environmental egg contamination in households with children (CDC, 2023).

A fecal flotation test at the first veterinary visit, repeated at subsequent kitten visits, helps confirm which parasites are present since some, like Giardia or tapeworms from fleas, need a different dewormer than the broad-spectrum products used for roundworms and hookworms. Kittens showing a pot-bellied appearance, dull coat, or visible worms in stool should be seen promptly rather than waiting for the next scheduled visit.

What should a kitten actually be eating, and how often?

Kittens need a diet specifically formulated for growth, not an adult maintenance food, because they require roughly two to three times the calories per pound of body weight as an adult cat along with higher protein and fat levels to support rapid development (WSAVA, 2021). Look for an AAFCO nutritional adequacy statement on the label confirming the food is formulated for "growth" or "all life stages," and feed small kittens 3 to 4 times a day until about 6 months old, since their stomachs can't hold enough food in one or two meals to meet daily energy needs (Cornell Feline Health Center, 2022).

Free feeding dry kitten food is common but should be monitored, since kittens that free-feed can develop a preference for overeating that carries into adulthood; the American Animal Hospital Association recommends transitioning to measured meals and monitoring body condition score starting around 6 to 12 months of age (AAHA, 2021).

When is the right age to spay or neuter a kitten?

Veterinary consensus has shifted toward earlier spay/neuter timing than many owners expect: the American Veterinary Medical Association and American Association of Feline Practitioners both endorse sterilizing kittens by 5 months of age, and many shelters now perform the surgery as early as 8 weeks when the kitten meets a minimum weight, typically around 2 pounds (AVMA, 2021). Earlier sterilization before the first heat cycle, which can occur as young as 4 months in some kittens, significantly lowers the risk of mammary tumors in females later in life (Cornell Feline Health Center, 2022).

Waiting past 5 to 6 months increases the odds of unwanted litters, since female kittens can go into heat and become pregnant well before their first birthday, and intact male kittens typically begin urine spraying and roaming behavior around 6 months as testosterone rises.

How do you actually litter train a kitten that keeps having accidents?

Most kittens instinctively use a litter box by 4 to 6 weeks old by watching their mother, but new kittens in an unfamiliar home still need the box shown to them repeatedly the first few days, placed in a quiet, easily accessible spot away from food and water. The general guideline from shelter medicine programs is one litter box per cat plus one extra, with boxes at least 1.5 times the kitten's body length, since undersized boxes are a documented reason cats eliminate outside the box (ASPCA, n.d.).

Accidents outside the box after training has been established are more often a signal of a medical issue, like a urinary tract infection or stress, than defiance, and persistent house-soiling in a kitten under a year old warrants a veterinary urinalysis before assuming it's purely behavioral.

How much should a kitten be playing, sleeping, and socializing at this age?

Kittens sleep an enormous amount, often 16 to 20 hours a day, but the waking hours are critical for development: the socialization window when kittens most easily accept new people, animals, sounds, and handling runs roughly from 2 to 7 weeks and starts closing noticeably by 14 weeks, making early, gentle, varied exposure important even before a kitten leaves its littermates (Cornell Feline Health Center, 2020).

Short, frequent play sessions with wand toys rather than hands prevent kittens from learning that biting and scratching human skin is an acceptable game, a habit that is much harder to unlearn once a cat is grown. Two to three 10-15 minute interactive play sessions a day also help burn off the sudden bursts of energy new owners often describe as the "witching hour" that hits kittens in the early evening.

How do you kitten-proof a home before bringing a new cat in?

Kittens explore with their mouths and paws far more than adult cats, so common household hazards include dangling blind cords, unsecured screens on high windows, lilies and other toxic houseplants, and small objects like rubber bands or hair ties that can cause an intestinal obstruction if swallowed (ASPCA, n.d.). The Pet Poison Helpline receives a disproportionate number of calls involving kittens ingesting string, thread, or ribbon, which can cause a linear foreign body requiring emergency surgery if it lodges in the intestines (Pet Poison Helpline, n.d.).

Secure a kitten's first few days to one confined, kitten-proofed room with food, water, a litter box, and hiding spots before giving full run of the house, which both limits access to hazards and helps a nervous kitten adjust without feeling overwhelmed by space it can't yet navigate confidently.

What routine vet visits and screenings does a kitten need in the first year?

Beyond the vaccine series, kittens typically need a physical exam at each vaccine visit to check for congenital issues like heart murmurs, umbilical hernias, or cleft palate, along with weight tracking to confirm steady growth. Many veterinarians also recommend FeLV/FIV testing at the first visit, particularly for kittens from unknown backgrounds, since both retroviruses can be present without obvious symptoms for months or years (Cornell Feline Health Center, 2021).

A final wellness exam around 6 months, often combined with the spay/neuter procedure, is a good checkpoint to confirm all vaccines and deworming are complete, discuss microchipping, and set a baseline weight and dental condition for the cat's adult wellness visits going forward.