Homosexuality implies lust. animals cannot lust after each other because they are not sinful creatures in the eyes of God.
Every sexual act done by animals is an act of pure love and kindness. They do not distinguish between 'male' or 'female' because they live according to the lord. Therefore they neither heterosexual nor are they homosexual.
Maybe you should try reading the bible and praying to the lord before you make any more a fool of yourself in this subchannel