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Cat Pregnancy9 min read

Cat Pregnancy Timeline: Week-by-Week Stages Chart

How long are cats pregnant? About 9 weeks. See what happens each week in one chart — pink nipples, belly growth, nesting — and the signs labour is close.

Cat wearing a yellow bandana meowing while sitting on a wooden floor

Whether your cat's pregnancy was planned or surprise, knowing what to expect at each stage helps you give her the best care. Cat pregnancy lasts 63-67 days (about 9 weeks), with rapid changes happening week by week.

Here's your complete week-by-week guide to feline pregnancy — from early signs to delivery day.

Quick Answer

  • Duration: 63-67 days (avg 65 days)
  • Average litter: 4 kittens (range 1-12)
  • First signs: Week 3 (nipples pinking)
  • Vet confirmation: Week 3-4 (ultrasound)
  • Visible belly: Week 5-6

Cat Pregnancy Week by Week

A cat is pregnant for about 9 weeks (63–67 days). Here is the whole timeline at a glance — what you will see each week and what to do about it:

WeekDaysWhat You'll SeeWhat To Do
Week 11–7Fertilisation — no visible signsNothing yet; keep her routine normal
Week 28–14Embryos implant — still no signsKeep her on normal adult food
Week 315–21Nipples turn pink and enlarge (“pinking up”); mild morning sickness possibleVet can confirm with ultrasound
Week 422–28Appetite increases; vet can feel the embryosStart switching to kitten food
Week 529–35Belly begins to round outIncrease portions gradually
Week 636–42Belly clearly larger and pear-shapedIncrease food gradually; smaller, more frequent meals
Week 743–49Kitten movement may be felt; she sleeps moreKeep her indoors; handle her belly less
Week 850–56Nesting starts; X-ray can count kittensSet up a quiet birthing box now
Week 957–67Restless, nesting hard, may stop eatingLabour within 24 hours — stay close

The detailed changes for each stage are below.

Weeks 1-2

(Days 1-14)
  • Fertilization and implantation
  • No visible external signs
  • Mild behavioral changes possible (more affection or withdrawal)
  • Mother's body begins hormonal shifts

Weeks 3

(Days 15-21)
  • Nipples 'pink up' — become rosier and more prominent
  • Possible mild morning sickness (nausea, occasional vomiting)
  • Slight increase in appetite
  • First confirmation possible via vet ultrasound

Weeks 4-5

(Days 22-35)
  • Belly starts to round out (visible by week 5)
  • Weight gain becomes noticeable (around 1-2 kg / 2-4 lb in total by the end)
  • Appetite increases significantly
  • Switch to kitten food now (higher calories)
  • Vet can confirm pregnancy via gentle palpation

Weeks 6-7

(Days 36-49)
  • Belly is clearly enlarged and pear-shaped
  • May feel kittens moving with gentle palpation
  • Mother becomes less active, sleeps more
  • Increased grooming, especially belly area
  • Eating noticeably more — keep increasing portions gradually

Weeks 8

(Days 50-56)
  • X-ray possible — count kittens and check positions
  • Mother starts seeking quiet, secluded places
  • Mammary glands clearly developed
  • Nesting instinct activates
  • Prepare birthing/whelping area now

Week 9

(Days 57-67)
  • Restlessness, pacing, intense nesting
  • Temperature may drop below 37.8°C (100°F) 12-24 hours before labor (not every cat shows this)
  • Loss of appetite in final 24 hours
  • May vocalize more than usual
  • Strong straining begins — the first kitten usually arrives within about 30 minutes

Which week is your cat in?

Enter the mating date to see her current week and due date window — or estimate it from the signs you've noticed.

Open Cat Pregnancy Calculator

Confirming Pregnancy: Vet Methods

MethodWhenWhat It Shows
PalpationWeek 3-4Detects fluid sacs in uterus
UltrasoundWeek 3+Confirms pregnancy + heartbeats
Blood test (relaxin)Week 4-5Hormone confirms pregnancy
X-rayWeek 7-8Counts kittens, shows positions

Caring for a Pregnant Cat

  • 🍽️ Diet: Switch to high-quality kitten food at week 3-4. Increase gradually — by the final weeks, she may need up to 50% more food than normal.
  • 💧 Water: Always fresh water available. Pregnancy increases hydration needs significantly.
  • 🛏️ Quiet space: Provide a peaceful, secluded area for resting and (later) birthing.
  • 🎾 Exercise: Gentle play is fine in early weeks. Reduce intensity in last 3 weeks.
  • 💉 No vaccinations: Do NOT vaccinate during pregnancy — can harm developing kittens.
  • 🚫 No medications: Avoid all flea treatments, dewormers, or other medications without specific vet approval.

Preparing the Whelping Area

Set this up at least 1-2 weeks before due date so mom can get comfortable:

  • • Large box (30"×30"×12" deep) in a quiet, warm room
  • • Soft towels or blankets that can be easily washed
  • • Easy access for mom but high enough sides to keep kittens in
  • • Away from foot traffic and other pets
  • • Keep room temperature 26-30°C (78-86°F) for newborn kittens
  • • Have clean towels, gloves, and vet number nearby for delivery

Signs of Labor (Last 24-48 Hours)

Watch for these signs as the due date approaches:

  1. 1. Restlessness and nesting — Pacing, seeking a hidden spot, lying down then getting up repeatedly.
  2. 2. Loss of appetite — Often refuses food in the last 12-24 hours.
  3. 3. Excessive grooming — Especially around belly and genitals.
  4. 4. Vocalization — May meow more or seem anxious.
  5. 5. Temperature drop (in some cats)— From a normal of about 38.5°C (101.3°F) to below 37.8°C (100°F). Unlike in dogs, not every cat shows this, so don't rely on it alone.
  6. 6. Visible contractions — Once strong straining starts, a kitten should follow within about 30 minutes.

When to Call the Vet Urgently

Emergency situations:

  • • Strong straining for 30 minutes without producing a kitten
  • • More than 2 hours between kittens
  • • Labor starting before about day 58
  • • Visible kitten stuck in birth canal > 10 minutes
  • • Bloody or green-yellow discharge before labor
  • • Severe vomiting, fever, or extreme lethargy
  • • Going past day 70 without labor signs
  • • Mother appears to be in pain or distress

False Pregnancy in Cats

Some unspayed cats experience pseudo-pregnancy with all the symptoms (weight gain, nesting, milk production) without actually being pregnant. This usually resolves on its own in about 6 weeks but if recurring, your vet may recommend spaying.

After Birth

Once kittens arrive:

  • • Mom usually handles everything — let her bond and clean kittens
  • • Confirm each kitten nurses within 1-2 hours
  • • Don't move the kittens for first 48 hours (causes stress)
  • • Continue feeding mom kitten food (high calories for nursing)
  • • Schedule post-birth vet check within 24-48 hours

The Bottom Line

Cat pregnancy is 63-67 days of gradual changeacross 9 weeks. Most cats handle it like champs — your job is to provide good nutrition, a safe space, and have a vet ready in case of complications.

Most kittens arrive without drama. By providing the right care and watching for warning signs, you'll be ready when those tiny meowing bundles arrive. 🐱

Frequently Asked Questions

How long is a cat pregnant?

Cat pregnancy (gestation) typically lasts 63-67 days, with the average being 65 days (about 9 weeks). The normal range is 58-70 days. That is about the same as a dog's pregnancy, often a day or two longer.

What are the early signs a cat is pregnant?

Early signs (around week 3): nipples become pinker and more prominent ('pinking up'), increased appetite, slight weight gain, more affectionate behavior, possible morning sickness with mild vomiting, and reduced activity. By week 4, a vet can confirm pregnancy via palpation or ultrasound.

How many kittens does a cat have?

The average cat litter is 4 kittens, but it can range from 1-12. First-time mothers usually have smaller litters of 2-3, and litters tend to get smaller again in older cats. Some breeds, such as Siamese and Burmese, often have larger litters of 5-8. The number of kittens can be confirmed via X-ray after day 45.

How can I tell if my cat is in labor?

Signs labor is starting (within 24-48 hours): restlessness and pacing, intense nesting behavior, loss of appetite, excessive grooming of the genital area, and possible vocalization. Many cats' temperature also drops below 37.8°C (100°F), though not every cat shows this. Once strong straining begins, the first kitten usually arrives within about 30 minutes.

Should I take my pregnant cat to the vet?

Yes, schedule at least 2 vet visits: confirmation around week 3-4 (ultrasound or palpation), and a check around week 7 (X-ray to count kittens, ensure positions are correct). Avoid all vaccinations during pregnancy. Most cats deliver without issues, but having vet contact info ready is essential in case of complications.

What should I feed a pregnant cat?

Switch to high-quality kitten food from week 3-4 onwards (kitten food has more protein and calories needed for fetal development). Increase portions gradually — by the final weeks, she may need up to 50% more food than normal. By the last week, she may prefer smaller frequent meals as her stomach gets compressed. Always provide fresh water.

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