How old does the cat have to be when can you desex a cat?

Answer 1

If a cat has already been pregnant and had kittens, you need to wait till her milk has fully dried up before you can have her fixed. And thus, if she has already been pregnant, she is old enough for the operation.

Answer 2

The ideal age for neutering kittens is about four or five months old, although some vets will do this as early as eight or twelve weeks. It is best to neuter and spay kittens before they reach six months old, as this is the average time they will become sexually mature.