Homosexual activity is found in nature as well, do animals make these same type of "higher brain" thinking choices?
Homosexual behavior in animals refers to the documented evidence of homosexual or transgender behavior in non-human animals. Such behaviors include sex, courtship, affection, pair bonding, and parenting. Homosexual and bisexual behavior are widespread in the animal kingdom: a 1999 review by researcher Bruce Bagemihl shows that homosexual behavior, has been observed in close to 1500 species, ranging from primates to gut worms, and is well documented for 500 of them.[1][2] Animal sexual behavior takes many different forms, even within the same species. The motivations for and implications of these behaviors have yet to be fully understood, since most species have yet to be fully studied.[3]
The naturalness of homosexuality in non-human animals is considered controversial by conservative religious groups who oppose LGBT social movements because these findings seem to point to the naturalness of homosexuality in humans.[4] Whether this has logical or ethical implications is also a source of debate, with some arguing that it is illogical to use animal behavior to justify what is or is not moral (see appeal to nature).[4][5][6]
the rest of the article:
http://en.wikipedia.org/wiki/Homosexuality_in_animals