# Kitten Care by Age: 1 Week to 3 Months Explained Kitten care changes fast in the first three months. A 3-week-old kitten still needs round-the-clock warmth and bottle feeding, while a 3-month-old kitten is eating solid food, playing hard, and building social skills. This guide gives you a week-by-week roadmap so you know what is normal at each age and when to call your veterinarian. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - Weeks 1 to 2: kittens need constant warmth, feeding every 2 to 3 hours, and gentle stimulation to urinate and defecate. - Week 3: eyes and ears are open, kittens start wobbling around, and you can begin short, gentle handling sessions. - Weeks 4 to 5: kittens transition from bottle to gruel, start using a litter box, and need daily play and people time. - Weeks 6 to 8: weaning finishes, and kittens can generally leave their mother and littermates once weaned, beginning at 6 to 7 weeks old [1]. - Weeks 9 to 12: kittens need a vaccine series, parasite treatment, and continued socialization. Vet visits happen every 3 to 4 weeks until about 6 months old [1]. ## How to Care for a Kitten 3 Weeks Old: Week-by-Week Basics ### Week 1: Warmth, Colostrum, and Constant Watching A newborn kitten cannot regulate its own body temperature. It depends on the mother, or on you, for warmth. The newborn period is a critical time that requires adaptation to life outside the womb, and kittens are at higher risk of death around difficult births [2]. If the mother is present, let her nurse. Colostrum, the first milk, is secreted during the first 24 hours of lactation and supports the kitten's immune system [2]. If the mother cannot nurse, use a commercial kitten milk replacer formulated to copy a mother cat's milk [2]. Never feed cow's milk. Weigh the kitten daily on a kitchen scale. Steady weight gain is the single best sign that feeding is working. Orphaned kittens are highly vulnerable and need monitoring of body weight along with nutritional support [3]. ### Week 2: Eyes Opening, More Milk Eyes usually begin to open this week. Do not force them. Kittens still cannot see well and still need feeding every few hours. Keep the nest warm and draft-free. Handle the kitten briefly and gently for cleaning and weighing. If the mother is caring for the litter, let her do the work and check that every kitten is gaining. ### Week 3: How to Care for a Kitten 3 Weeks Old This is the week most owners start to wonder what is normal. Here is what to expect. **What do kittens do at 3 weeks old?** They are just starting to move around. Eyes are open, ears are uncurling, and kittens begin to stand and take wobbly steps. They may hiss or spit when startled. They still sleep most of the day. **Feeding.** A 3-week-old kitten is usually still nursing or bottle feeding. Feed a kitten milk replacer every 3 to 4 hours if the mother is not nursing. Follow the label for how much to offer, and let your veterinarian adjust the amount based on weight and condition. Successful bottle feeding takes careful attention to technique, timing, and the kitten's physiology [2]. **Warmth.** The kitten still cannot fully control its body temperature. Keep the sleeping area warm and provide a cooler corner so the kitten can move away if it gets too hot. **Stimulation.** If the mother is not present, you must stimulate the kitten to urinate and defecate after each feeding. Use a warm, damp cotton ball or soft cloth and gently wipe the genital and anal area until the kitten goes. Kittens this age cannot do this on their own. **Handling.** Start short handling sessions, a few minutes at a time, several times a day. Early experiences shape adult behavior and welfare [4]. Keep sessions calm and quiet. If you are raising an orphan, see [Newborn Kitten Care 0-4 Weeks: Warmth Colostrum and Stimulation Protocol](/knowledge/veterinary-medicine/life-stage-emergency-care/newborn-kitten-care-0-4-weeks-warmth-colostrum-and-stimulation-protocol) for the full protocol. ### Week 4: How to Care for a Kitten 4 Weeks Old Kittens at 4 weeks old are mobile, curious, and messy. They can usually eliminate on their own now, so introduce a shallow litter box with non-clumping litter. Avoid clumping litter, which kittens may eat. Start offering gruel. Mix kitten milk replacer with a high-quality canned kitten food to a soupy consistency. Warm it slightly. Put a little on your finger or on a shallow saucer and let the kitten lick it. Expect most of it on the kitten, not in the kitten, at first. Keep bottle feeding alongside gruel. Weaning is a process, not a single day. Weigh daily and watch for loose stools. This is also a good age to start gentle handling by different people. More breeders say multiple people should handle kittens than actually do it in practice [4], so make a point of inviting calm visitors to sit with the litter. ### Week 5: How to Care for a Kitten 5 Weeks Old By 5 weeks old, most kittens eat gruel well and drink less milk replacer. Thicken the gruel gradually toward canned food. Offer fresh water in a shallow bowl. Play behavior appears now. Kittens stalk, pounce, and wrestle with littermates. This play is how they learn bite inhibition and social rules. If you have a single kitten, you become the playmate, so use wand toys and never your hands. Socialization matters at this age. Early experiences have lasting effects on adult behavior [4]. Introduce new sights, sounds, surfaces, and gentle handling. Keep every new experience short and positive. ### Weeks 6 to 8: Weaning and Leaving Mom Weaning usually finishes around 6 to 8 weeks. Kittens can generally be taken from their mother and littermates once they are weaned, beginning at 6 to 7 weeks old [1]. Many veterinarians prefer waiting until 8 to 12 weeks for better social development, so ask your vet what fits your situation. By 8 weeks, kittens should be eating canned and dry kitten food, drinking water, and using the litter box reliably. They need their first veterinary visit around this time. Kittens need to visit the vet every 3 to 4 weeks until they are about 6 months old for shots and parasite treatment [1]. If you are bringing a new kitten home to a resident cat, plan the introduction slowly. See [How To Introduce A New Kitten To A Resident Cat](/knowledge/veterinary-medicine/clinical-methods/how-to-introduce-a-new-kitten-to-a-resident-cat) and [How Long To Introduce New Cat To Old Cat](/knowledge/veterinary-medicine/clinical-methods/how-long-to-introduce-new-cat-to-old-cat). ### Weeks 9 to 12: How to Care for a Kitten 3 Months Old A 3-month-old kitten looks like a small cat but still needs kitten-specific care. Feed a growth-formula kitten food three to four times a day. Fresh water always available. Vaccination is the main medical task now. Maternal immunity passed from the mother declines slowly over time, and vaccines cannot effectively stimulate a kitten's immune system until that immunity wears off [1]. Kittens should be vaccinated on a regular schedule beginning at 2 to 3 months old [1]. Keep your kitten away from unvaccinated cats until the full vaccine series is complete [1]. Socialization continues. Most US cat owners have not heard of kitten socialization programs, but about half would be interested in enrolling in one [5]. Even without a formal program, daily positive exposure to people, sounds, and handling pays off. Ask your veterinarian about [Preventive Care For Kittens](/knowledge/veterinary-medicine/preventive-care/preventive-care-for-kittens) at your next visit. ## Kitten Care Schedule at a Glance | Age | Feeding | Warmth and Elimination | Socialization and Vet Care | |---|---|---|---| | Week 1 | Milk replacer every 2 to 3 hours, or nursing | Constant warmth, stimulate to eliminate | Minimal handling, daily weight check | | Week 2 | Every 3 hours, or nursing | Warm nest, stimulate to eliminate | Brief gentle handling, daily weight check | | Week 3 | Every 3 to 4 hours, or nursing | Warm nest, stimulate if mother absent | Short handling sessions several times daily | | Week 4 | Introduce gruel plus milk replacer | Shallow litter box, non-clumping litter | Handling by several calm people | | Week 5 | Gruel thickening toward canned food | Litter box use improving | Daily play, new gentle experiences | | Weeks 6 to 8 | Canned and dry kitten food | Reliable litter box use | First vet visit, vaccine series starts | | Weeks 9 to 12 | Kitten food 3 to 4 times daily | Free access to litter box and water | Vaccines every 3 to 4 weeks, ongoing socialization | ## Signs Something Is Wrong Call your veterinarian if you see any of these: - Weight loss or no weight gain for 24 hours - Refusing to eat or nurse for more than one feeding - Diarrhea, vomiting, or a bloated belly - Trouble breathing, crying constantly, or feeling cold to the touch - Eyes or nose with discharge, or eyes that stay closed past 2 weeks - Weakness, wobbling that gets worse, or a kitten that stops moving - Straining to urinate or defecate, or no stool for more than a day Orphaned kittens face nutritional deficiencies, infectious disease, and social deficits, all of which raise the risk of developmental problems and death [3]. When in doubt, call. A kitten can decline within hours. ## Common Mistakes to Avoid **Feeding cow's milk.** Use only commercial kitten milk replacer, which is made to match a mother cat's milk [2]. **Skipping night feedings for a newborn.** Very young kittens cannot go long between meals. Set an alarm. **Chilling a kitten during feeding.** A cold kitten cannot digest food well. Warm the kitten first, then feed. **Using clumping litter too early.** Kittens may eat it. Use non-clumping litter until they are older. **Waiting on vaccines.** Maternal immunity blocks vaccines until it fades, so the series must start on schedule and finish [1]. A single shot is not enough. **Too much handling too soon.** Short, calm sessions beat long, busy ones. Early experiences shape adult behavior [4]. **Letting a kitten meet unvaccinated cats.** Keep your kitten away from unvaccinated cats until the full vaccine series is done [1]. ## Supplies and Setup That Matter for Health - A kitchen scale that reads in grams, for daily weights - Commercial kitten milk replacer and small nursing bottles - A heating pad set on low, wrapped in a towel, with a cool corner to escape to - A shallow litter box with non-clumping litter - Canned and dry kitten food labeled for growth - Shallow food and water dishes - A carrier for vet visits - A quiet, draft-free room for the first weeks at home If you are also caring for a pregnant cat or planning for a litter, see [How Long Are Cats Pregnant? Gestation, Care, and When to Call a Veterinarian](/knowledge/veterinary-medicine/life-stage-care/how-long-are-cats-pregnant). ## Limitations and When to Contact a Veterinarian This guide covers typical kittens. Every kitten is an individual, and your veterinarian sets the plan for your kitten's weight, health, and vaccine timing. **Call now (emergency).** Trouble breathing, a kitten that feels cold and will not warm up, repeated vomiting, seizures, or a kitten that cannot stand or nurse. Newborns can die quickly, and kittens born after a difficult delivery are at higher risk [2]. **Call the same day.** Refusing to eat, diarrhea, weight loss, crying that will not stop, or a kitten that seems weak or limp. **Schedule a routine visit.** First exam around 6 to 8 weeks, then every 3 to 4 weeks until about 6 months old for shots and parasite treatment [1]. Ask about spay or neuter timing at one of these visits. ## Frequently Asked Questions ### Can I give a 3-week-old kitten a bath? Usually no. Kittens this age cannot control their body temperature, so a full bath can chill them fast. Wipe messes with a warm, damp cloth and dry the kitten right away. If the kitten is very dirty or has fleas, ask your veterinarian what is safe at this age. ### How much should a kitten weigh at 3 weeks old? There is no single number that fits every kitten. The trend matters more than the number, so weigh daily and look for steady gain. Your veterinarian can tell you whether your kitten's weight is on track for its size and breed. ### When can a kitten eat wet food? Most kittens start tasting gruel around 4 weeks old and eat canned food well by 5 to 6 weeks. Mix kitten milk replacer with canned kitten food at first, then thicken it over several days. Keep offering milk replacer until the kitten is eating enough solid food. ### Do I need to stimulate a kitten to poop if the mother is there? No. The mother usually handles cleaning and stimulation. If she is not doing it, or if a kitten seems bloated or uncomfortable, step in with a warm, damp cloth and call your veterinarian if nothing happens. ### When can my kitten meet other cats? After the full vaccine series is complete, and only with cats that are vaccinated and healthy. Until then, keep your kitten away from unvaccinated cats [1]. A slow, supervised introduction works best, even after vaccines are done. ## Related Articles - [Preventive Care For Kittens](/knowledge/veterinary-medicine/preventive-care/preventive-care-for-kittens) - [Newborn Kitten Care 0-4 Weeks: Warmth Colostrum and Stimulation Protocol](/knowledge/veterinary-medicine/life-stage-emergency-care/newborn-kitten-care-0-4-weeks-warmth-colostrum-and-stimulation-protocol) - [How Long Are Cats Pregnant? Gestation, Care, and When to Call a Veterinarian](/knowledge/veterinary-medicine/life-stage-care/how-long-are-cats-pregnant) - [How Long To Introduce New Cat To Old Cat](/knowledge/veterinary-medicine/clinical-methods/how-long-to-introduce-new-cat-to-old-cat) - [How To Introduce A New Kitten To A Resident Cat](/knowledge/veterinary-medicine/clinical-methods/how-to-introduce-a-new-kitten-to-a-resident-cat) - [Introducing New Kitten](/knowledge/veterinary-medicine/clinical-methods/introducing-new-kitten) - [8-Week-Old Kitten Care: Feeding, Vaccines, and Play](/knowledge/veterinary-medicine/pet-care/8-week-old-kitten-care) - [When Do Kittens Wean? Age and How to Wean](/knowledge/veterinary-medicine/nutrition/when-do-kittens-wean) ## References 1. [Kitten Care - Cat Owners](https://www.merckvetmanual.com/cat-owners/caring-for-cats/kitten-care). Merck Veterinary Manual. 2. [Feline Neonatal Care](https://pubmed.ncbi.nlm.nih.gov/40973418/). The Veterinary clinics of North America. Small animal practice, 2025. 3. [The Orphan Kitten](https://pubmed.ncbi.nlm.nih.gov/40494672/). The Veterinary clinics of North America. Small animal practice, 2025. 4. [Exploring kitten socialisation practices and welfare implications within a Swedish breeding association](https://pubmed.ncbi.nlm.nih.gov/41607582/). Animal welfare (South Mimms, England), 2026. 5. [Socialising kitties: A quantitative survey of US cat owner attitudes towards kitten and adult cat socialisation programmes](https://pubmed.ncbi.nlm.nih.gov/40693132/). Animal welfare (South Mimms, England), 2025. ## Further Reading - [Merck Veterinary Manual: Cat Owners](https://www.merckvetmanual.com/cat-owners) - [Cornell Feline Health Center: Health Information](https://www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information) - [American Veterinary Medical Association: Pet Care](https://www.avma.org/resources-tools/pet-owners/petcare)