I disagree, I believe that animals are not truly homosexual, they do MOUNTING to show dominance. Instinct is different than LUST. Humans are the only creatures who do such things because of UNNATURAL lusts, brought about by either:
A. A (male) child will emulate the behavior of a parent if that parent is the dominant (overbearing) force in the family, normally homosexual males have an overbearing mother OR are trying to emulate sisters. (He may also develop a speech emulation or lisp, and in some instances may emulate the mannerisms and walk of the females to further this copy-cat behavior)
B. A (female) who has been wronged (cheated on, raped) by a male will cease to be interested in males sexually due to a survival mechanism and will cling to a woman for the safety that it brings.
EDIT:
C. A (male) who is sexually molested or abused by a family member or older male and is traumatized, may also cling to males believing (unnaturally) that this is normal behavior.
ON ANOTHER NOTE:
A few of my male and female friends are homosexual as well, and in ALL the cases, it was either because of A, B, or C. I have had a long conversation with one of my guy friends who is gay, he tells me that he also got his oral fixation, he believes, because his overbearing mother breastfed him till he was 9 years old.
In closing, NO, I do not believe animals are homosexual. It's just a mater of
Anthropomorphism