This debate is pathetic. How can we ever really know how animals think? Nature is best left to work without human interference, as it has been for countless years. I can't imagine how many instances of homosexuality there has most likely been over the course of time between animals.
Homophobia is present in most religions. You can be accused of being Islamophobic by just singling out Islamic beliefs and insinuating that Islam is the only religion promoting homophobia.