Well, I can't find it to quote it, but in reference to Shogun's assertion that animals engage in homosexuality, it just isn't true.

Animals will mistakenly have sex with the same sex (llamas are a great example. They just hump anything they find until they get it right). And animals will enjoy long friendships with others of the same sex...but this is NOT a "homosexual" bond where you get two male dogs hanging out and engaging in sexual relations over the course of time. It doesn't happen, and the assertion that it does is a lie.