When a cat brother and sister give birth to kittens, they may develop hereditary diseases such as congenital heart disease, so the kittens should be taken to a pet hospital for examination to avoid the occurrence of diseases. It is recommended to prevent very closely related cats from having babies by giving them medicine during estrus or sending them to a doctor for sterilization.

Possible effects of inbreeding in cats

1. As inbreeding intensifies, the vitality of DNA will slowly decrease, and some recessive genetic diseases will It's also starting to show up.

2. Excessive inbreeding can cause congenital disabilities and even gradual loss of reproductive capacity.

3. Inbreeding may lead to high empty pregnancy rate, few litters even if pregnant, low survival rate of kittens, restricted development of kittens, smaller body size, or occurrence of abnormal fetuses and stillbirths.