You forgot incest. Happens in virtually every zoo and animal park. Often actually arranged by the zoo.Why should it get a special place in the public limelight, when there are so many interesting things in the animal kingdom, such as autofellatio, bisexuality, cannibal sex, coercive sex, necrophilia, pedophilia and various kinky sexual fetishes to talk about? Why to prefer queer animals, if so to speak?
Hix