Everything will be great! If everything goes well, then both will be happy! It doesn't matter if a woman or a man is in the place of a man! And as for the fact that someone's gut has torn someone's gut, you can break a dick with a fool!
If we are talking about passive zoophiles, then briefly - everything is very bad, there is a recorded case about an American: Pignan Kenneth repeatedly visited the farm and on the forums of zoophiles was considered an expert on passive anal sex with stallions. Some of his visits, including the not so successful last one, were recorded on video by his friends and posted on the Internet; the file Mrhands.mpg has been widely distributed. On July 2, 2005, Pignan, his fellow amateur videographer James Tate, and an unidentified man entered the stable of Tate's neighbors, where Pignan had his last intercourse with an Arab stallion named Bullseye. Soon after, he felt unwell, but for several hours he did not dare to go to the hospital, fearing that he would lose his access to classified government information and his job at Boeing if the incident was publicized. His acquaintances took him and unloaded him at the Inumklo hospital, where Pignan died on the way to the intensive care unit from peritonitis as a result of a ruptured colon, after which they fled, but were later found by the number of the car filmed by the hospital's security camera.
Some of them will probably end. But you already are, right, you know? And you are obviously not interested in the answer either.
I dare to disappoint you: there will be no centaur; and a unicorn will not be from a narwhal with a horse; and pegasus from a horse with a hawk; and any other mythical beasts.
Why? Because the reproductive barrier. So, in general, new species are formed. At one fine moment, a representative of one population can no longer fertilize a representative of another, and they begin to rapidly move away from each other.
Even if fertilization occurs, after the fusion of the gametes, the resulting zygote will die; no - there will be a miscarriage of the fetus; also not (although the results of intercourse of such distant species definitely do not reach this point) - the offspring will be unviable and will die under the onslaught of environmental factors; no - it will simply be sterile and will not give offspring; even that is not - the descendants of hybrids will be sterile.
(So, if someone really likes horses or horses or anyone else, and they like you (although this is a question for those involved in animal psychology) - copulate, how many will fit into whom; although there were cases when the penises of horses, entering too deep and piercing the insides, killed the poor zoophiles).