Cat pregnancy, called gestation, lasts between 63 and 67 days on average — just over nine weeks. It’s short enough that many owners miss the early signs entirely, yet a great deal happens in that time. Whether your queen (unspayed female cat) fell pregnant unexpectedly or you’ve intentionally bred her, understanding what to expect at each stage makes a significant difference to her health and the survival of her kittens.
Signs Your Cat is Pregnant
The earliest signs appear around two to three weeks in, and they’re subtle. Look for:
- Pink, swollen nipples (pinking up): One of the first visible signs, usually apparent by week 3.
- Morning sickness: Some queens vomit occasionally during weeks 3–4. This is normal and brief.
- Increased appetite: Energy demands rise sharply as kittens develop.
- Weight gain: Most noticeable from week 5 onwards, concentrated in the abdomen.
- Nesting behaviour: Your cat starts seeking out quiet, hidden spaces — cupboards, under beds, behind furniture.
- Increased affection or withdrawal: Both are normal. Cats respond to pregnancy differently.
A vet can confirm pregnancy by palpating the abdomen from around day 20, or via ultrasound from day 16. X-rays are used closer to the end of pregnancy to count kittens — useful for knowing when labour is complete.
Nutrition During Pregnancy
Nutrition is the most important thing you can control during pregnancy. Switch your queen to a high-quality kitten food from the moment you confirm pregnancy — kitten food has the higher protein, fat, and calorie content that a pregnant cat needs. Do not feed a low-calorie or weight-control formula during pregnancy.
Read up on cat food essentials to understand what to look for on the label — specifically, look for a named meat protein as the first ingredient, and adequate taurine content. Taurine deficiency in pregnant cats leads to serious kitten health problems.
Feed little and often — as the uterus expands, your cat’s stomach capacity decreases. Three to four smaller meals a day works better than one or two large ones. Fresh water must always be available. Keep what cats like to eat in mind, but don’t let preferences override nutritional requirements during pregnancy.
Vet Care and Vaccinations
A vet visit early in pregnancy is important. Your vet will confirm the pregnancy, check for any health concerns, advise on deworming (some wormers are safe in pregnancy, others are not), and discuss a birth plan.
Do not vaccinate a pregnant cat with live vaccines — this poses a risk to the developing kittens. Ideally, a queen should be fully vaccinated before breeding. If your cat is unvaccinated and falls pregnant, discuss the timing with your vet carefully.
Avoid all unnecessary medications, flea products not cleared for use in pregnancy, and essential oils. Many products safe for non-pregnant cats are contraindicated during gestation.
Setting Up a Nesting Area
From around week 7, your queen will begin looking for a birthing spot. Set up a quiet, warm, low-traffic nesting box before she chooses one herself — otherwise she may pick your wardrobe or a spot under your bed where kittens could easily get lost.
Use a large cardboard box or plastic container with one low side for easy entry. Line it with layers of newspaper topped with an old towel or fleece. Place it in a quiet room where she won’t be disturbed. Show her the box and let her investigate — ideally she’ll start sleeping in it a week or two before birth.
In South African summer months, make sure the nesting area is not in direct sun and has adequate ventilation. Overheating can stress a pregnant queen and be dangerous in late gestation.
The Stages of Labour
Stage 1 (12–24 hours before birth)
Your cat becomes restless, may stop eating, and breathes more rapidly. She’ll frequently visit the nesting box. Her rectal temperature drops slightly to below 37.8°C. This stage can last 12 to 24 hours and is normal — don’t intervene.
Stage 2 (Active labour)
Visible straining begins and kittens are delivered, typically 15 to 60 minutes apart. Each kitten is born in its own sac, which the mother will tear and clean. She’ll also sever the umbilical cord and stimulate the kittens to breathe by licking them vigorously.
First-time mothers occasionally need help — if a kitten is born in its sac and the mother doesn’t respond within 30 seconds, carefully tear the sac from the face and gently rub the kitten with a clean cloth to stimulate breathing. Call your vet if you’re unsure.
When to call the vet immediately
- Straining hard for more than 20–30 minutes without producing a kitten
- More than 4 hours between kittens (when more are expected)
- Green or black discharge before the first kitten is born
- The mother is clearly exhausted and unable to continue
- A kitten is partially visible and stuck
Post-Birth Care
Once all kittens have been delivered, your queen will nurse and clean them continuously. Ensure she has fresh food and water close to the nesting area — she won’t want to leave the kittens in the first day or two.
Do not let the kittens get chilled. A heating pad set to low under half the box allows kittens to move away from the heat if needed, while staying warm if the mother steps out briefly.
Weigh kittens daily using a kitchen scale for the first two weeks. They should gain 10–15 grams per day. Any kitten consistently losing weight or not gaining needs supplemental feeding and a vet check.
Think ahead about litter training once the kittens reach 3–4 weeks — at this point they’ll start exploring, and a shallow litter tray nearby will help establish good habits early. If you’re keeping any of the kittens, read up on indoor enrichment to set them up for a mentally stimulated, happy life.
Preventing Unwanted Pregnancies
A female cat can fall pregnant as young as four months old and can have up to three litters per year. If you are not intentionally breeding, spaying is the responsible choice. It eliminates the risks of pregnancy, prevents pyometra (a life-threatening uterine infection), and reduces the risk of mammary cancer significantly. Spaying can be done from five to six months of age — speak to your vet about the right timing for your cat. Understanding your cat’s mating season and heat cycles is useful context if you’re deciding when to spay.
