Unexpected litters are one of the most common reasons for cat overpopulation. If your intact female cat has been outdoors or has contact with intact male cats, understanding feline pregnancy and birth is essential — both to care for your own cat and to understand the scope of the feline overpopulation crisis.
Signs of Pregnancy
A cat's pregnancy lasts approximately 63 to 67 days. Signs typically become visible about two to three weeks after mating. The most reliable early sign is nipple development (called "pinking up") — the mammary glands enlarge and the nipples become more prominent and pinker than usual. By the fourth or fifth week, the abdomen begins to visibly enlarge. An experienced veterinarian can confirm pregnancy via palpation at three to four weeks or via ultrasound at about three weeks.
Nutrition During Pregnancy
Pregnant cats require significantly more calories, especially in the final three to four weeks when kittens are growing rapidly. Feed a high-quality kitten food — which is calorie-dense and nutrient-rich — throughout the pregnancy and during nursing. Food should be available free-choice, as pregnant cats cannot consume enough calories in two meals to meet their needs.
Preparing for Birth
Create a nesting area in a quiet, warm, low-traffic room. A large cardboard box lined with clean towels or blankets works well. Keep the area at about 85 degrees Fahrenheit — newborn kittens cannot regulate their body temperature. Have your veterinarian's emergency number readily available. Most cats give birth without human assistance, but complications requiring veterinary intervention do occur.