Impressive. 
Truer words were never written.
Like the Arabian horse? 
I’ve seen all manner of animals, including aardvarks, mating in zoos, but best of all I like going to the nature center because I learn all kinds of nature stuff that those TV nature specials don’t show. I’ll never forget the time I saw a male mallard rape another male mallard. There were a lot of old ladies at the nature center that day and they turned to stare at a cute little ground squirrel while the mallard rape was taking place.
Chicken sex is pretty awful to watch. The rooster does a little dance, brushing his wing on the ground to woo the hen. When she doesn’t run away he BITES the back of her neck and rapes away like crazy. The poor hen squawks and flails about flapping her wings like crazy. Sometimes they don’t even bother with the dance and go straight to bite/rape.
I…think I hate you. I’m going to hear that noise in my sleep tonight.
But I couldn’t look away!
Our hotel in Arles, France: Breakfast was served on a beautiful, tranquil patio which contained a lovely fountain . . . with turtles fucking their brains out while we ate.
The novel A Man In Full by Tom Wolfe has a four-page-long, extremely explicit sex scene, between two horses. The chapter is called “The Breeding Barn” and it’s basically a first-hand account, in unbelievably graphic detail, of a champion racing stallion inseminating a mare at the farm of a rich man. A brilliant piece of writing, and Wolfe treats the subject with a genuine respect and awe at the ways of nature and the powerful instincts of animals, though not without a little humor here and there. Just one of the many great parts of that novel.
My jaw hurts from how far it fell. Towards the end I half-expected the damn thing to say “Oh, Alvin…”
His face! Oh, god, that was not the noise I expected from that turtle. A grunting, maybe. But not that.
No, Impressive was a Quarter Horse.
It was actually kind of interesting, seeing his vocal cords at work back there.
Rule 34, kid. 
I came across a couple of courting hedgehogs one late spring evening, does that count?
I watched a LOT of Discovery channel at an impressionable age, went meant that I had witnessed numerous sex acts performed by diverse species and had “the birds and the bees” figured out long before my mother tried to give me The Talk. Perhaps this explains my adult preference for doggy style; it just seems more natural.
If reincarnation is real, I want to come back as a Leopard slug. Acrobatic hermaphroditic sex!
According to Temple Grandin in Animals In Translation, the rapist roosters turned up as a side effect of breeding chickens for huge breasts. Er, wait, that sounded wrong. Abundant white meat, let’s put it that way.
What you do in the privacy of your own home is your business, but I hope you at least gave the poor little hedgehogs a bath before you released them.
I give you the mating habits of the Kakapo (the “Owl Parrot”)
[Nanny Ogg]
…But the hedgehog can never be buggered at all!
[/NO]