>>46034590generally speaking animals only reproduce through rape so they can't really be hurt from sex unless it's an exceptionally small animal like a cat or something. dogs for example are used to dog dicks which are obviously more "painful" than human dicks due to the knot making it difficult for the female to escape. human dicks are nothing compared to that.
all that said human male on female animal bestiality is weird I'm only interested in cute chinese girls having sex with male animals.