It doesn't matter that it can be found in many other animals, according to the Bible, the creator says it's unnatural. If you want to please the creator God of the Bible then you do what he says and abstain from it. Even if it's popular, even if animals do it.
I'm a homosexual man. How do you figure what I'm writing is biased and hurtful. The so called OT laws applied to the ancient Israelites up to the Pentecost 33 C.E. then they were done away with. A very few things, like homosexuality, adultery, murder, and the eating of blood was forbidden by the Christian congregation. No longer punishable by death, but rather removal from the congregation.