Cat siblings can have babies, but just like people, inbreeding can be harmful. Sibling cats can mate when they are in heat, but there is a high probability that they will give birth to cats that are deformed and have imperfect functions of various body parts. They have no concept of ethics and do not know the dangers of inbreeding, so in order to prevent the birth of deformed kittens, they should try their best to have sterilization surgery and not let them mate with each other.

The dangers of inbreeding in cats:

1. Inbreeding in cats is prone to some genetic diseases, and may even lead to physical defects in cats, or intellectual defects in cats. If the cat's parents have physical defects and the cats' siblings also have defects, the defects will be magnified even more in inbred cats.

2. Inbreeding of cats will greatly increase the mortality rate and malformation rate of their fetuses, and their survival rate will also be reduced.

The reasons for inbreeding in cats:

1. Today’s cats are generally kept at home by their owners and cannot go out. When they are in estrus, if If there are members of the opposite sex around, under the influence of hormones in the body, it is natural for cats to inbreed with their parents, brothers and sisters.

2. In the world of cats, there is no concept that close relatives cannot reproduce. Cats believe that there is nothing wrong with breeding with their own brothers and sisters. Because cats have no sense of morality, cats do not think that has a problem.