Catholics say homosexuality is against natural law because God created the sexual faculty for procreation between male and female. Perhaps most interesting is the fact that many animals have the choice of both sexes but prefer the same sex. In fact animals with high status are among the most rampant. With this plethora of evidence how can some Catholics still insist that homosexuality is evil and against natural law?
Natural law pertains to creatures who can reason. The Old Catholic Encyclopedia quotes St. Thomas Aquinas when defining natural law: “According to St. Thomas, the natural law is ‘nothing else than the rational creature’s participation in the eternal law’ (I-II, Q. xciv).” Remember, many animals also eat their young. Better not to go there!