This, and only this. The rest of this bile I leave in the pristine condition in which it was found. Are you, then, aware of the well-documented instances of bisexuality and homosexuality in non-human animals? Homosexual behaviors have been observed in approximately 1500 species, and these behaviors are very well documented in 500 or so species in particular (such as the Bluegill Sunfish, African Elephant, and common gull). I would say that these instances clearly contradict your statement that homosexuality is an aberration in "heterosexually reproducing" species.