"Various forms of same-sex sexual activity have been recorded in more than 450 different species of animals by now, from flamingos to bison to beetles to guppies to warthogs. A female koala might force another female against a tree and mount her (see here and here), while throwing back her head and releasing what one scientist described as 'exhalated belchlike sounds.' Male Amazon River dolphins have been known to penetrate each other in the blowhole."
Ha. They said "blowhole". It'll be interesting to see where this research leads and what it can teach us about the nature of animals and ourselves. I wonder, do people think animals choose to be gay? Doubtful. It's in their nature. It's human nature too. See the connection? [source and image]