Newborn Kitten Care: Week-by-Week Guide (0

Week-by-Week Development Milestones

Kittens change dramatically during their first eight weeks. This table outlines the key milestones, care needs, and physical developments you should expect at each stage. If you are caring for an orphaned kitten that needs bottle feeding, knowing these stages is critical.

Age	Weight	Development	Care Needs
0–1 Week	3–5 oz	Eyes and ears closed, umbilical cord attached, can crawl	Feed every 2–3 hrs, 85–90°F, stimulate to eliminate
1–2 Weeks	5–7 oz	Eyes begin opening (7–10 days), ears starting to unfold	Feed every 3–4 hrs, 80–85°F, continue stimulation
2–3 Weeks	7–10 oz	Eyes fully open, ears erect, wobbly walking begins	Feed every 3–4 hrs, 75–80°F, stimulate after feeding
3–4 Weeks	10–14 oz	Walking steadily, baby teeth emerge, can eliminate on own	Feed every 4–6 hrs, introduce gruel, provide shallow litter box
4–6 Weeks	14–24 oz	Running, playing, grooming themselves, using litter box	Weaning onto wet kitten food, first vaccinations at 6 weeks
6–8 Weeks	24–32 oz	Fully coordinated, social skills developing, all baby teeth in	Fully weaned onto solid kitten food, socialization critical

Understanding when kittens start walking helps you gauge whether a kitten is developing normally. Most kittens take their first wobbly steps around 2–3 weeks and walk confidently by week 4.

Temperature Requirements

Newborn kittens cannot regulate their body temperature. Hypothermia is the leading cause of death in neonatal kittens, so maintaining the right ambient temperature is essential.

Age	Ambient Temp	Notes
0–1 Week	85–90°F (29–32°C)	Use heating pad on low under half the bedding
1–2 Weeks	80–85°F (27–29°C)	Kittens begin huddling together for warmth
2–3 Weeks	75–80°F (24–27°C)	Beginning to develop some thermoregulation
3–4 Weeks	72–75°F (22–24°C)	Can maintain body heat more reliably
5+ Weeks	70–75°F (21–24°C)	Room temperature is usually sufficient

Warning: Never Feed a Cold Kitten

A kitten whose body feels cool to the touch cannot digest formula properly. Always warm a cold kitten gradually before feeding. Place the kitten against your body or on a warm towel until their pads and ears feel warm. Feeding a hypothermic kitten can cause aspiration pneumonia or bloating, which may be fatal. Watch for signs of fading kitten syndrome if a kitten is persistently cold or lethargic.

Feeding Schedule & Formula

If the mother cat is not available, you will need to bottle feed kittens using kitten milk replacer (KMR). Never use cow's milk, as it causes severe diarrhea and malnutrition.

Age	Frequency	Amount Per Feeding	Overnight?
0–1 Week	Every 2–3 hours	2–6 mL	Yes, every feeding
1–2 Weeks	Every 3–4 hours	6–10 mL	Yes, every feeding
2–3 Weeks	Every 3–4 hours	10–14 mL	Can skip one overnight
3–4 Weeks	Every 4–6 hours	14–18 mL + gruel	Usually not needed
4–8 Weeks	3–4 times daily	Weaning onto wet food	No

Bottle Feeding Tips

Hold the kitten belly-down on a towel or in your hand — never on their back like a human baby, as this risks aspiration
Warm the formula to approximately 100°F (body temperature) before feeding
Tilt the bottle at a 45-degree angle so the nipple stays filled with formula
Let the kitten set the pace — never squeeze formula into their mouth
Burp after feeding by holding upright and gently patting the back

Stimulation for Elimination

Kittens under 3 weeks old cannot urinate or defecate on their own. The mother cat normally stimulates them by licking. For orphaned kittens, you must mimic this after every feeding.

How to Stimulate:

Use a warm, damp cotton ball, tissue, or soft cloth
Gently rub the kitten's genital and anal area in short, repetitive strokes
Continue for 30–60 seconds until the kitten urinates (and possibly defecates)
Clean the area gently and pat dry to prevent irritation
Repeat after every feeding until the kitten is 3–4 weeks old

Urine should be pale yellow. Dark yellow or brown urine signals dehydration. Stool should be yellowish-brown and formed. Diarrhea, especially with a green tint, is a veterinary emergency in neonatal kittens.

Weight Targets by Week

Daily weighing is the single best way to monitor a newborn kitten's health. A kitten that fails to gain weight or loses weight for two consecutive days needs immediate veterinary attention.

Age	Expected Weight	Daily Gain
Birth	3–4 oz (85–115 g)	—
1 Week	5–7 oz (140–200 g)	~0.5 oz (10–15 g)
2 Weeks	7–10 oz (200–280 g)	~0.5 oz (10–15 g)
3 Weeks	10–13 oz (280–370 g)	~0.5 oz (10–15 g)
4 Weeks	12–16 oz (340–450 g)	~0.5 oz (10–15 g)
6 Weeks	1–1.5 lbs (450–680 g)	~0.5 oz (10–15 g)
8 Weeks	1.5–2 lbs (680–900 g)	~0.5 oz (10–15 g)

Tip: Use a Kitchen Scale

A digital kitchen scale in grams is the most accurate way to track a newborn kitten's weight. Weigh at the same time each day and record the numbers. A gain of 10–15 grams per day is healthy. Stalling or losing weight for more than 24 hours warrants a vet visit.

When to Introduce Solid Food

Most kittens are ready to begin the weaning process around 3–4 weeks of age. Start by mixing wet kitten food with warm KMR to create a thin gruel. Gradually thicken the mixture over the next few weeks.

Weaning Steps

Week 3–4: Offer a shallow plate of formula mixed with a small amount of wet kitten food (gruel consistency)
Week 4–5: Thicken the gruel — more food, less formula
Week 5–6: Offer mostly wet kitten food with a small amount of formula on top
Week 6–7: Transition to straight wet kitten food, offer dry kibble moistened with water
Week 7–8: Kittens should be fully weaned and eating kitten food on their own

Foods to Avoid

* Cow's milk (causes diarrhea and nutritional deficiency)
* Adult cat food (does not meet kitten nutritional needs)
* Dog food (lacks taurine and other cat-essential nutrients)
* Raw meat (risk of bacteria and parasites)
* Any human food not approved by your veterinarian

Frequently Asked Questions

What temperature do newborn kittens need?▼

Newborn kittens need an ambient temperature of 85–90°F (29–32°C) during their first week. They cannot regulate their own body temperature until about 3–4 weeks of age. The temperature can be gradually reduced to 80°F by week two and 75°F by week four.

How often do you feed a newborn kitten?▼

Newborn kittens (0–1 week) need to be fed every 2–3 hours around the clock, including overnight. From 1–2 weeks, feed every 3–4 hours. By 3–4 weeks, feedings can be spaced to every 4–6 hours as you begin introducing solid food.

How do you stimulate a newborn kitten to go to the bathroom?▼

After each feeding, gently rub the kitten's genital and anal area with a warm, damp cotton ball or soft cloth using short, gentle strokes. This mimics the mother cat's licking. Continue until the kitten urinates and defecates. This stimulation is necessary until about 3–4 weeks of age.

How much should a newborn kitten weigh?▼

A healthy newborn kitten weighs between 3–4 ounces (85–115 grams) at birth. Kittens should gain approximately 0.5 ounces (14 grams) per day. By one week they should weigh 5–7 oz, by two weeks 7–10 oz, and by four weeks around 12–16 oz.

When do newborn kittens open their eyes?▼

Kittens begin to open their eyes between 7–10 days of age. Their eyes are usually fully open by 2 weeks, though vision remains blurry until about 3–4 weeks. All kittens are born with blue eyes; permanent eye color develops between 6–8 weeks.

The Bottom Line

Caring for newborn kittens requires warmth, frequent feeding, and stimulation for elimination during the first 3–4 weeks. After that, kittens become increasingly independent as they learn to walk, eat solid food, and use the litter box. Daily weighing is the best way to ensure your kitten is thriving.

If you are caring for orphaned kittens, do not hesitate to contact a veterinarian for guidance. The first 48 hours are the most critical, and professional support can make the difference between life and death for vulnerable neonatal kittens.

Newborn Kitten Care: Week-by-Week Guide (0–8 Weeks)