After spaying, a female cat’s hormones change. She no longer goes into heat or calls for a mate, often becomes calmer and less active, and her appetite usually increases. Unfortunately, that combination means spayed cats can put on weight quickly. The good news is that with the right food and portions, weight gain is easy to prevent.
Why Do Spayed Cats Gain Weight?
After spaying, a cat’s energy needs can drop by around 20–30%, while her appetite often increases. If she keeps eating the same amount as before, she’ll gain weight. Obesity in cats increases the risk of diabetes, arthritis, urinary problems and other health issues. Read more about obesity in cats.
Choosing Food for a Spayed Cat
You don’t have to buy a special “sterilized” or “neutered” food, but these foods can be helpful. Most are:
- lower in calories and fat;
- higher in protein to help maintain muscle;
- higher in fiber to help her feel full;
- formulated to support urinary health.
Whatever you choose, make sure it’s a complete and balanced food suitable for her age, and switch gradually over 7–10 days. Read more: how to switch your cat to a new food.
The most important thing is the amount of food. Ask your vet how many calories your cat needs, use the feeding guide on the pack as a starting point, and adjust according to her weight and body shape. You should be able to feel her ribs easily under a thin layer of fat.
Feeding Tips
- feed measured meals, usually two to four a day, rather than leaving food out all day;
- weigh the food with kitchen scales or use the measuring cup that comes with it;
- include wet food, which helps with hydration and fills her up with fewer calories;
- use puzzle feeders and treat balls to slow eating and keep her busy;
- keep treats to no more than 10% of daily calories;
- play with her every day to keep her active;
- weigh her every month or two, and adjust portions if her gains or loses weight;
- always provide fresh water.
What About Kittens?
Many cats are spayed or neutered at around 4–6 months, while they’re still growing. Kittens should stay on a complete kitten food until about 12 months old (or longer for large breeds), but you may need to reduce portions slightly to avoid weight gain. Ask your vet. Read more about feeding a kitten.
Read more: spaying a cat and feeding a neutered male cat.
