I think they are the same, just as fucked up (
@FeminismsCancer lol), the chicken guy is actually smarter though because at least he has a tight hole to fuck, have you seen the size of horse dick, fucking a female horse would be like throwing a hotdog down a hall way, you'd basically be drowning your dick, also you can possibly die in that situation because if you cause the horse discomfort and it reacts violently one kick and you are fucked JFL.
So you'd fist have to spend time around the horse and/or learn about horse behavior and biology, what signals they use to show they are willing to fuck, etc all that shit just so that you fuck a horse
Imagine basically becoming an uncertified yet qualified horse tamer just so that you can be degenerate and fuck horses JFL, all that effort just to settle, nah not worth it.
If I'm going to have to settle like an absolute subhuman (fucking animals) I'd likely choose the method that requires the least amount of knowledge and effort. In that case a chicken isn't the wisest choice, a dog is, they are already domesticated, subservient and trainable animals. If I was so mentally fucked that I could be sexually aroused by animals I'd go for a female dog, I could live alone, get a single sound proofed room, and just get a few (like 2) female dogs, your neighbors wouldn't suspect a thing, you can just go to a pound and purchase your new replacement whore whenever you please or if one dies of old age, I'm pretty sure a lot of smart zoophiles are already doing this, everyone around you would just think you're a bachelor unaware that you are going to town on your pet in your sound proofed room every night.
Then it should be killed and eaten