Animals don't exactly have the same willpower and reputation requirements that one finds in typically civilized human social order.
If animals have rape, it's a subset of human-on-human rape, and carries fewer of the nuanced consequences of rape among humans.
Psychological trauma is probably not even in the equation when it comes to rape among most animals below a certain level of intelligence, particularly when considering untamed animals.
Due to the minimal psychological aspects, which assuredly are a hallmark of human-on-human rape, and the bald fact that the very word "rape" itself carries loaded connotations when considered as a concept by humans, I wonder if it is appropriate to use the same word for variations of sexual intercourse and related behavior among wild animals.
It was humans have always applied our feel good emotions to animals and we do it incorrectly all the time. Here's one example.
To the grief, most humans might rape but most won't commit necrophilia. I think it's a pretty good argument against grief in animals. (There's a lot of additional evidence of necrophilia in animals)
