I won't bother finding the quote that made me think of this article, but if anyone is interested in learning more about animal sexual relations between animals of the same sex, here you go:
Can Animals Be Gay?
TLDR: The general conclusion is that same-sex pairings among animals is more common than once thought, as scientists have been presuming for years that animals in couples must be of opposite sexes, without bothering to sex the animals. That turned out to be a mistaken assumption.