I don't think he was on the receiving end. I have spent a lot of time with stallions and I can't think of anything that would induce a stallion to mate with a human. I can't even envision any way to introduce a stallion's penis into a man's rectum.
It's much more likely that he was trying to do a mare and she kicked him. Mares do that. They will often kick the poop out of a stallion who approaches them. Hence, at a serious breeding farm the mares have to be hobbled and restrained to keep them from kicking a valuable breeding stallion. Likely this jerk climbed up on a stepladder behind the mare and she put a pair of hooves into his midsection. That can kill quite easily.
Maybe if you have any veterinary or zoological training/knowledge/experience you can confirm this for me:
I am under the impression that all mammalian males are quite dependent on female pheromones (in females of their own species) for successful mating. In other words, if the pheromones are not there is sufficient concentration, the male may possibly attempt to mount, but cannot penetrate and cannot ejaculate.
This would suggest that male mammals (1) do not mate with females of significantly divergent species (2)can not mate with other males (so-called animal homosexuality) and (3) rarely or never successfully mate with a female that is not sexually mature and in estrus.
When I say "successfully mate" I mean a completed act of coitus: erection, mounting, penetration, deposit of semen.
Homo sapiens is probably the only exception to this pattern, because our mating is more conditioned on social and psyhological factors, and our minds and wills can dominate our raw instincts.
Is this accurate?
You ain't real familar with the habits of gerbil-herders, are ya?
(and neither am I, but my ex-wife worked in a couple doctor's offices)
After hearing some of their ER stories-nothing these deviants try to do suprises me anymore...