Do animals inbreed?

Animals will inbreed, animals generally have low IQ, and there is no concept in their minds that inbreeding cannot be formed. So, I think they will have inbreeding.

Although human beings are advanced animals, their IQ is definitely far ahead. However, when technology is underdeveloped and human beings know nothing about biological genetic information, no one opposes consanguineous marriage. In other words, inbreeding also existed among humans at that time. A Dream of Red Mansions describes that Jia Baoyu married Xue Baochai, but in fact, Xue Baochai's mother and Jia Baoyu's mother are sisters, which means that Xue Baochai is Jia Baoyu's cousin and close relative.

So there will be inbreeding in that era and since the appearance of human beings. Up to now, we all know that close relatives can't get married because with the continuous progress of human beings, we have a deep understanding of biological genetic variation, from which we know that close relatives' marriage is not conducive to "eugenics" and can greatly increase the chances of breeding offspring. And these conditions are unknown to animals.

We can also know that animals are inbreeding from some phenomena in life. There is a female cat at home. How many kittens can she have a year? We will give away our kittens. Some neighbors who like cats will also come to my house to adopt kittens. As the kitten grew up, it became a big cat a few months later. When we feed the cat food, occasionally the neighbor's cat will come and want to eat it. My mother cat hit me, so the two cats confronted each other and felt that a big war was about to start. The mother cat will feed her hard-earned mouse to the kitten, but when she sees a cat about her own age in front of her, she doesn't want to share food with it. She raised her tail and screamed, almost fighting. Fortunately, I dispersed them in time. They never know each other again. Kittens don't even know their mother cats, let alone their brothers and sisters. It can be seen that inbreeding between animals is inevitable.