How I tire of this argument. It's quite normal in some mammals for there to be a strict sexual order. The dominant males breed in a harem, everyone else goes bye-bye. And if you take over the harem from another male...you get to eat the cubs.
Oh, and some animals eat their own feces.
I guess these behaviors should be normalized for humans as well?
There are a whole lot things that human beings do that you would not like---but they do them despite your disapproval. What "animal" has been performing clitorectomy routinely on its female offspring for a thousand years? It's not aadvarks. What animal instituted the practice of no sex before marriage only a few hundred years ago? Before that, following the betrothal system, pregnancy came before marriage.
Normal human beings are weirder than you would like to consider.
Why not? After all, we all evolved from a common ancestor and there’s nothing special about humans, right?