This is one of those question that comes up frequently , yes this type of stuff happens on farms , i mean farms = animals so ppl around them specially kids tend to have experiments , most of my friends i can talk about these things that grew up on farms had fun, there are club farms so to speak where u can go to have fun but since in most places this is so illegal and shunned that noone can advertise it , its usually close knit groups who know and trust each other and meet at a farm , these are invitation only and noone brings a new member in just like that its talked around and even vetted with meating the individual before and so on , dont forget what ppl risk with these things. in the Eu the further east you go to more these things become taboo , lets not even talk about beast , simply being gay is considered an evil thing in most places . You get invited to these things like you get invited to a gang bang club , those operate along similar lines , meet ppl get to know them etc , but since this is so taboo and lets not forget illegal its hard.
Had been invited to a few of these so i know they are fun , much more fun then just the sex part its a group of ppl presumably friends and we share a lot in common not just the love of animals. But dont expect to see adds for something like this it wont happen not even on a site such as this .