My pet just had a litter. When can I spay her?
If a mother has had a litter, they will need to nurse for 4-6 weeks. The puppies or kittens should be able to eat solid food and only then, when a mother’s babies are eating on their own, should they be separated. It usually takes about two weeks of separation for the mother’s milk sacs to dry up but this must happen before the surgery. It is important to get her in as soon as they dry up as mother cats will most likely go into nursing heat and get pregnant again while nursing the first litter, and dogs can go into heat a couple of months after having the first litter.