Gay And Nature

Listening to Shebang on Triple M on the way driving back from work, the hosts requested listeners to call in to tell them stories about homosexual behaviour of their pets, so that they can prove that gay is actually not against the nature...

Well. I am not sure how evolution thinking, survival-of-the-fittest believing Darwinists of the world would conclude that gay is actually not against the nature. I don't see one species that is naturally homosexual - because if they do, they would not have survived the cruel selection of evolution. They would have become extinct long long time ago, as they naturally would not mate, reproduce and carry on their genes.