I'm not sure if "homosexuality", per se, exists in any species other than our own, you know? I mean, same-sex sexual activity certainly does... but does ANY sexual orientation? That entire concept seems like an inherently-human thing. I don't know that I'd even say that bonobos have it, and they seem more human-like in their sexual behavior than any other species I can think of. Calling them "bisexual", or the majority of animals "heterosexual", just seems weird to me.

I meant that it’s homosexuality in orientation, because while animals aren’t exactly cognitive of their state of being, there are in fact purely homosexual animals who refuse to mate with the opposite sex and only go with the same sex - that story of the Gay Penguins for instance who took in an orphaned baby Penguin and raised it as their own.

Which is why I think homosexuality has to be genetically influenced at some level, and the only possible purpose such an orientation could even serve is population mitigation.