Most cats give birth about 63 to 65 days after becoming pregnant, and the entire process from first contractions to the last kitten can take anywhere from a few hours to more than a day. If your cat is expecting, here’s what the timeline looks like and what you need to know at every stage.
Signs That Labor Is Close
In the day or two before labor begins, your cat will start behaving differently. She’ll seek out a quiet, enclosed space, often pulling blankets or towels into a nest. She may stop eating, become unusually clingy, or hide. One reliable physical sign: her body temperature, normally between 100.4 and 102.5°F, will drop below 100°F within roughly 24 hours of labor starting.
You may also notice restlessness, pacing, or excessive grooming around her belly and genital area. Some cats vocalize more than usual. These behaviors can last several hours or stretch across a full day, especially for first-time mothers.
What Happens During Birth
Feline labor unfolds in stages. The first stage involves the cervix relaxing and the uterus beginning to contract. You won’t see obvious straining yet, though you might notice your cat’s abdomen rippling or feel the kittens shifting if you place a hand gently on her side. For cats delivering their first litter, this stage alone can last up to 36 hours.
The second stage is active delivery. Contractions become visible as your cat bears down, and you’ll see each kitten emerge, usually still wrapped in a thin membrane. The mother will typically tear this membrane open, bite through the umbilical cord, and vigorously lick the kitten to stimulate breathing. Kittens can arrive anywhere from 10 minutes to over an hour apart.
One thing that surprises many owners: cats commonly take a long pause partway through delivery. This is called interrupted labor, and it’s considered normal. The mother stops straining, nurses the kittens already born, eats, and rests comfortably for up to 24 or even 36 hours before delivering the rest of the litter. It looks alarming, but as long as she seems relaxed and healthy, it’s nothing to worry about.
When Something Goes Wrong
Not every delivery goes smoothly. The warning signs that require a call to your vet include: strong, visible straining for more than 30 minutes without producing a kitten, a long gap between kittens when the mother seems distressed or exhausted, any foul-smelling or dark green/black discharge before the first kitten arrives, or the mother collapsing or becoming unresponsive. A kitten stuck partway out of the birth canal is also an emergency.
Large litters and very small mothers carry higher risk for complications. If you know your cat is pregnant, having your vet’s after-hours number on hand before the due date is a practical step.
The First Hours After Birth
The most important thing that happens in the first hours is nursing. Kittens need to drink their mother’s first milk, called colostrum, as soon as possible after birth. Colostrum contains antibodies that provide the kittens’ only immune protection for their first weeks of life. Their intestines can absorb these antibodies for roughly 12 to 16 hours after birth, with absorption highest right at delivery and declining rapidly. Any kitten that hasn’t nursed within 12 hours has largely missed this window.
Healthy newborn kittens will instinctively crawl toward the mother’s belly and begin nursing within the first hour or two. If a kitten isn’t latching or seems too weak to move, gently placing it near a nipple can help. A kitten that still won’t nurse after repeated attempts needs veterinary attention.
Keeping the Nest Warm Enough
Newborn kittens cannot regulate their own body temperature. They depend entirely on their mother and the environment to stay warm, and cold is one of the most common causes of newborn kitten death. During the first week, the nest area should be kept between 85 and 90°F. This drops gradually over the following weeks: 80 to 85°F in week two, 75 to 80°F in week three, and 70 to 75°F from week four onward.
A heating pad set on low, placed under half the bedding (so kittens can crawl away if they get too warm), works well. Keep the nesting box in a draft-free room, away from foot traffic and other pets.
Healthy Growth in the First Month
Kittens are born weighing between 50 and 100 grams, roughly the weight of a small lemon. A healthy kitten gains about 12 grams per day and should double its birth weight within 10 days. If you have a kitchen scale, weighing each kitten daily at the same time is the simplest way to track whether things are on track. A kitten that fails to gain weight for two consecutive days, or loses weight, needs attention.
For the first three weeks, kittens do almost nothing but nurse and sleep. Their eyes open around 7 to 10 days, and their ear canals open shortly after. They’ll begin wobbling around the nest by week three, and by week four they’re noticeably more coordinated and curious.
Weaning: Transitioning to Solid Food
Most kittens are ready to start trying solid food around 4 weeks of age, though some show interest as early as 3 weeks. The process is gradual. Start with wet kitten food mixed with water or kitten milk replacer into a soupy consistency. By 5 to 6 weeks, you can begin offering slightly thicker mixtures. The whole transition from nursing to eating solid food independently takes about two to four weeks, with most kittens fully weaned by 8 weeks old.
During this period, kittens will still nurse alongside eating solid food. The mother will naturally start discouraging nursing as the kittens get older and their teeth come in. Expect some messy faces and food-covered paws as they figure things out.
Watching the Mother’s Health
While all the attention goes to the kittens, the mother cat faces her own health risks in the weeks after birth. The most serious is eclampsia, a dangerous drop in blood calcium that occurs most often when the kittens are one to four weeks old and the mother is producing peak amounts of milk. Early signs are subtle: lethargy, poor appetite, and trembling. It can progress to full-body muscle spasms, pale gums, rapid breathing, and a slowed heart rate. Eclampsia is life-threatening and requires immediate veterinary treatment.
A nursing mother needs significantly more calories than usual. Feeding her high-quality kitten food (which is more calorie-dense than adult food) with free access throughout the day helps meet the demand. Fresh water should always be available, as milk production requires a lot of hydration. Watch for any vaginal discharge that smells foul or turns dark in color after the first day or two, which could signal an infection.