After sterilization, the male/female hormones in the cat’s body have not been completely metabolized, so they will appear in estrus and spring. They will not go into spring until the hormones in the body are completely metabolized. If a cat-raising family does not want to mate the cat, they can perform sterilization surgery on the cat. It is best to perform sterilization when the cat is not in heat. After sterilization, the cat has a docile personality and has no gender distinction.