Newborn Kitten Care Week by Week

The job list for the first eight weeks is short, and the first item on it surprises people. Newborn kittens cannot regulate their own body temperature for roughly the first three weeks, so keeping them warm ranks above feeding them — and a cold kitten must be warmed before it is fed, because a chilled gut cannot digest. Everything else is warmth, weight, toileting, hygiene and handling, repeated on a schedule. This page is about those tasks rather than about growth milestones; the developmental side is covered in kitten growth stages week by week. Track the numbers as you go with the kitten weight calculator.

Warmth Comes Before Everything Else

If you only take one thing from this page, take this one.

A newborn kitten cannot shiver and cannot maintain its own temperature. For the first two to three weeks it is entirely dependent on the queen, its littermates and the ambient temperature of the nest. A kitten separated from the pile chills within minutes.

Target roughly 86 to 90°F (30 to 32°C) in the nest area during week one, dropping by about 5°F (3°C) a week: around 81 to 84°F (27 to 29°C) in week two, about 79°F (26°C) in week three, and normal room temperature of roughly 70 to 75°F (21 to 24°C) from week four.

Always heat one end only. A heat pad, covered heat disc or a wrapped hot water bottle should sit under part of the bedding so kittens can crawl off it. A nest that is uniformly hot is as dangerous as a cold one.

Never put a kitten directly on a heat source, and never use a heat pad without a thick cover. Newborns cannot move away efficiently and can be burned.

Feel the ears and paw pads. Cool ears and cold pads mean a chilled kitten. A healthy warm kitten feels warm at the extremities and squirms; a cold one goes limp and quiet.

Warm a cold kitten slowly, over 30 to 60 minutes, against your body or on a covered warm pad, and do not feed until it feels warm and is moving. Feeding a chilled kitten risks the milk sitting undigested in the stomach.

A kitten that is cold, limp and unresponsive is an emergency, not a wait-and-see. Ring a vet while you warm it.

The Daily Weigh-In

Weight is the single best early warning system you have, and it costs a minute a day.

Weigh every kitten at the same time each day on digital kitchen scales that read in grams, using a bowl or towel as a tare. Write it down — memory is not good enough with a litter of five.

Expect roughly 10 to 15 g a day — about a third to half an ounce — in the first weeks, which works out at around 100 g (3.5 oz) a week. Grams are the working unit here because ounces are too coarse to show a day's gain; a kitchen scale that reads in single grams is what you want.

Birth weight is usually 90 to 110 g (about 3 to 4 oz), and it should roughly double by one to two weeks of age. A kitten that has not doubled by two weeks needs looking at.

A single flat day is normal. Two consecutive days without gain, or any day with a loss, is the point to act — either the kitten is not getting enough milk, is being outcompeted at the teat, or is unwell.

Identify kittens properly. Different colored collars made from soft yarn, or a photo of markings, prevents you from weighing the same confident kitten twice and missing the quiet one.

The expected figures by age are set out in kitten weight by age chart if you want to compare against a fuller table.

Weight falls before behavior changes. This is why the scales beat watching. By the time a kitten looks unwell it has usually been losing ground for two days.

Feeding: What the Queen Does and What You Do

With a healthy mother present, your feeding job is mostly supervision.

Newborns feed roughly every one to two hours, day and night, and a settled litter sleeps between feeds. Constant crying is the signal that something is wrong.

Watch that every kitten gets a teat. The largest kittens claim the best positions and the smallest can be quietly squeezed out. Rotating a small kitten onto a productive teat for a few feeds a day is reasonable help.

Feed the queen generously. A nursing cat needs two to three times her normal intake, on kitten food or a complete growth diet, available at all times with water beside it. Underfeeding her is the commonest reason a whole litter underperforms.

Top up only if the weights say so. Kitten milk replacer is the supplement, given in addition to nursing rather than instead of it. Cow's milk is not appropriate at any age.

Hand-rearing is a different job entirely — feeding every two to three hours around the clock, belly-down, plus toileting — and it is set out in how to care for orphaned kittens.

From about three and a half to four weeks, start offering gruel. That is the beginning of weaning rather than the end of nursing, and the method is in how to wean kittens.

Toileting: The Task Nobody Mentions

This is the fact that kills orphaned kittens, and it matters even when a queen is present.

Kittens under about three to four weeks cannot urinate or defecate on their own. The queen licks the genital and anal area after every feed to trigger it, and without that stimulation the bladder and bowel do not empty.

If the queen is present and attentive, you do nothing — but check. A kitten with a distended abdomen that has not passed anything is a problem, and first-time queens occasionally neglect one kitten.

If you are stimulating manually, use a piece of cotton wool or a soft cloth dampened with warm water, wiped gently over the genital area for 10 to 20 seconds after each feed, until urine passes.

Urine should appear at every feed. Feces once or twice a day is normal. A kitten that has not urinated for more than about 12 hours needs veterinary advice.

Dry the area afterwards and check for redness. Persistent damp causes soreness quickly at this age.

Stimulation can stop from around three to four weeks, when kittens start using a tray by themselves. Offer a shallow, low-sided tray with plain non-clumping litter from about three weeks — clumping litter is a hazard for kittens that taste it.

Diarrhea in a kitten this small is urgent, not a wait-and-see. Dehydration develops within hours at this size.

Week-by-Week Care Schedule

The whole job on one page.

Worming timing varies by product and region — many protocols start at two to three weeks and repeat every two weeks until around twelve. Follow your vet's schedule rather than a generic one.

The developmental milestones that sit alongside this table — eyes, ears, teeth, first steps — are covered in kitten growth stages week by week.

Weeks 2 to 7: The Socialization Window

The most consequential and least visible part of newborn kitten care.

The sensitive period for socialization in cats runs from roughly two to seven weeks. Experiences in that window shape how a cat responds to people, handling, noise and other animals for the rest of its life, and the window closes early — well before most kittens go to their homes.

Gentle daily handling from around week two is the core of it: a few short sessions, a minute or two each, working up to longer as they grow. Kittens handled daily in this period are measurably friendlier as adults.

Handle every part of them. Paws, ears, mouth and belly. A kitten used to having its feet held becomes a cat you can clip claws on without a fight.

Introduce variety deliberately from about four weeks: different people including men and children, the vacuum cleaner at a distance, the washing machine, a radio, carpet, tile, cardboard, a carrier left open on the floor.

Keep every experience short and positive. Overwhelming a kitten in this window is worse than doing nothing. Back off at the first sign of real fear.

Support the body properly when you lift them — one hand under the chest, one under the hindquarters, never by the scruff after the first few weeks. The technique is in how to hold a kitten.

Do not remove kittens from the litter early to socialize them. Littermates teach bite inhibition and social boundaries that people cannot, which is a large part of why when can kittens leave their mom settles on eight weeks as an absolute floor.

Hygiene and the Nest Itself

Unglamorous and genuinely protective.

Set the nest somewhere quiet, dim, draught-free and closed off from other pets and household traffic. A cardboard box with a low cut entrance and high sides works as well as anything sold for the purpose.

Change bedding daily, more often if soiled. Soft, absorbent, washable — old towels or fleece blankets. Avoid loose-weave fabrics with loops that can catch claws.

Wash your hands before and after handling kittens, and change clothes if you have been handling other cats. Newborns have almost no immune defense beyond the antibodies in the queen's first milk.

Keep the queen's own food, water and litter tray close to the nest so she does not have to leave the kittens far or for long.

Do not move the nest unnecessarily. A queen who feels the site is unsafe will start carrying kittens around the house, which is stressful and occasionally dangerous.

Watch the queen as closely as the kittens. A hot, painful or hard mammary gland, foul-smelling discharge, refusal to eat or a queen who abandons the nest are all urgent veterinary matters, and mastitis in particular moves quickly.

When to call the vet

Newborn kittens deteriorate faster than adult cats, so the threshold to call should be low.

Same-day call for any of these: a kitten that is cold and limp, one that has lost weight or failed to gain over two days, constant crying, no urine passed in 12 hours, diarrhea, labored breathing, or a kitten that is separated from the pile and not seeking it out.

Same-day call for the queen too if she is off her food, feverish, has a painful udder, has smelly discharge, or shows no interest in the litter.

Fading kitten syndrome is the term for a kitten that feeds normally at first and then progressively weakens over a day or two. It has many causes, some treatable, and the outcome depends almost entirely on how early it is seen.

Never delay because a kitten is small. Size is not a reason to wait — it is a reason to move faster, because reserves are measured in hours.

Eyes are a common early problem. Swelling, bulging or discharge from a closed eyelid is an infection behind the lid and needs a vet to open and treat it; the normal timeline is in when do kittens open their eyes.

Have the number to hand before you need it, including the out-of-hours service. Most newborn emergencies happen at three in the morning.

Frequently Asked Questions

How warm should newborn kittens be kept?

About 86 to 90°F (30 to 32°C) in the nest during the first week, dropping roughly 5°F (3°C) a week to normal room temperature by week four. Heat only one end of the nest so kittens can crawl to a cooler spot.

Should I feed a cold kitten straight away?

No. Warm it first, over 30 to 60 minutes, until it feels warm and is moving normally. A chilled kitten cannot digest, so milk given to it sits in the stomach. Never withhold food beyond that warming period.

How much weight should a newborn kitten gain each day?

Roughly 10 to 15 g a day, or about 100 g (3.5 oz) a week. Birth weight of 90 to 110 g — 3 to 4 oz — should roughly double by one to two weeks. Two days without gain, or any loss, warrants a vet call.

Do I need to help newborn kittens go to the toilet?

Only if the mother is absent or neglecting one. Kittens under three to four weeks cannot urinate or defecate without stimulation, so an orphaned kitten needs a warm damp cloth wiped over the genital area after every feed.

When can I start handling newborn kittens?

Short, gentle sessions from around two weeks, increasing steadily. The socialization window runs from about two to seven weeks, and daily handling in that period has a lasting effect on how friendly the cat becomes.

When do kittens start using a litter tray?

From around three to four weeks, once they can walk and no longer need stimulation. Offer a shallow tray with plain non-clumping litter — most kittens copy the queen and need almost no teaching.

Newborn kitten care comes down to five repeated tasks: keep the nest warm and drop the temperature by about 5°F (3°C) a week, weigh every kitten daily and treat two flat days as a problem, make sure each one is feeding and toileting, handle them gently every day from week two through the socialization window, and keep the nest and your hands clean. Feed the queen as much as she will eat. Call a vet early rather than late, because a kitten this size has hours of reserve rather than days. Keep the daily figures honest with the free kitten weight calculator.