Do animal brothers and sisters mate?

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Yes, all animals (especially cats) can and will breed within the family tree, however this can lead to many diseases that will may kill animals slowly and can even be highly contagious, which ALSO leads to the STD questions, animals can get STD's some not as serious as AIDS or HIV but still deadly and highly contagious STD's. If you have pets that you think or know have inbred, then (this sounds gruesome but its necessary) kill the babies because they will just pass disease on and on. I live in a small town and a lady had a house that was inhabited ONLY by cats that she went and fed everyday. When she died, the police went into the house and there were cats born without limbs, some had a strange disease that gummed their eyes shut, it was really terrible and all 128 of them had to be put down. GET UR PETS FIXED AND DON'T EVER LET THEM INBREED!

Yes they will DO NOT LET THEM its bad,

Brother and sisters can not mate

Son and mothers can not mate

But daughter and fathers can in most cases

that's what others are talking about "inbreeding"

Animals MOST not all do not know the difference all they know is the animal insect to mate it's a primal urge they just know they have to fallow it that's why animals only mate to reproduce not like humans where we do it most of the time because it feels good not so in animals as I said before not all animals dolphins will mate with anything there are the closes to humans when it comes to doing it for fun there almost worst then humans

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Yes but not preferably. A brother and Sister will mate, but usually that occurs when they have limited options-

Meaning if a brown bear were next to his sister or an unrelated brown bear, most often he would choose the unrelated brown bear.

This is because all animals including humans have pheremones. Pheremones are chemicals given off by your body that can attract or repulse a potential mate. If 2 animals are related they have similiar DNA, similiar immune systems (MHC Complexes), and similiar recessive genes- the more related you are to an individual the less appealing their pheremones will be.

This is just nature's way of safeguarding the health of an animal's offspring. The less identical the DNA the more fit (healthy and able to have offspring) a child/ offspring will be.

If choices are limited though- an animal will opt for any compatible animal it could mate with, including family members, which is why nbreeding most often occurs in zoos, or areas where there is population decline for a species.

Just to be clear though, when ANIMALS MATE WITH THEIR BROTHER/SISTER IT DOES NOT MEAN THE OFFSPRING WILL BE UNHEALTHY- it is just that there is a greater chance of passing on recessive genetic disorders.

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The taboo that keeps human brothers and sisters from mating is cultural, not biological.

Mammals do not have this cultural taboo, and therefore will mate with siblings when they come into heat or rut. In some pack and herd species where there is a dominant male or female (wolves, etc.) a "brother" may be prevented from mating with a "sister" because the alpha male controls the mating. But should the alpha male die or be displaced and the brother took dad's place, he would then mate with his sister.

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There are actually breeds of cats where if you want a purebread it is most likely from a brother and sister mating. This is why a lot of purebreads have deficiencies such as an enlarged heart. Unless you want more cats around, I suggest that you always spade and neuter your animals.

Yes animal brother and sisters mate, this has been found in recent test that is they both are in season the will mate because they do not know the different.

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yes they will.

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The majority of animals can breed in the family but there are some that do not such as cows. A bull will not breed with his sister or daughter.

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Not all animals will mate with their siblings . I have a cat who I tried to breed with her brother on many occasions; he would try but she would not let him. I have found out from other people that some cats will not breed with their siblings. They all have been manx cats though. I am not sure if its just a manx cat thing or if we all have a one in a billion chance of having a cat that wouldn't mate with a sibling.

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Sometimes (just sometimes) Inbreeding and Linebreeding is used in purebred dogs, cats, cattle and horses to keep a certain high quality trait in that family.

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"The majority of animals can breed in the family but there are some that do not such as cows. A bull will not breed with his sister or daughter."

That is a load of crap. Bulls CAN and DO breed with their sisters and daughters. What kind of cattle are you raising?? Must be some new breed that understand genetics and can ignore their sex drives. *rolling eyes*

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Yes cats will breed like wildfire if they're are not fixed! They arent fussy whether they are related or not, trust me I know I have a few inbred cats with extra paws.

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Yes.

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yes, agree

First answer by Jason Steimel. Last edit by Hetesh. Contributor trust: 19 [recommend contributor]. Question popularity: 11 [recommend question]