Are there any animals?

Any of the more advanced vertebrates can have ual members, within any species. Numerous cases are found in primates, birds, dolphins, elephants, giraffes, hyenas and others. I'm speaking of true behaviour, where an organism prefers its own to the opposite . When I was working at a wildfowl research center, I was given the task of setting up a small breeding group of Andean Sheldgeese. We received three goslings which turned out to be two males and one female. The two males bonded together, mutually preening each other, establishing territory to defend, and would begin nest building when the season was appropriate. Upon seeing the female, the two males attacked and almost killed her. I separated the three to single, separate enclosures for one year. Upon reintroducing them to each other, the males took up right where they had left off and immediately attacked the female. My point being is that the ual behaviour was totally ingrained from the start and was not to be changed. I believe I've heard of more than 500 doented ual cases in other species. It is true that it it will not be the death for the species, but for non-humans, it is a ending of that particular gene line.