Never heard any black person calling another black person an animal.
My stepdad (and my mother) called me an animal because I wasn't as outgoing as they'd like. That hurt like you wouldn't believe. It was straight up verbal abuse, and it was unwarranted. A name that should be reserved for the worst humanity has to offer, just casually said to me like nothing.
Mind you: not because I was jumping on cars, or outside gangbanging, or cursing in the house. Not because I committed any unspeakable crime. Simply because I was depressed and not social enough. Yes, this actually happened.
Black people can be reckless with their tongues.
With all the blacks calling each other "nikka," and some clowns actually saying "******" (those odd future kids): yes, blacks will call other blacks animals and savages. Why would you think different, breh?
When other races see one of their own commit a heinous act, like molesting a child, they WILL call that one an animal and disown him/her. They won't consider that person worthy of their skin color. We do the same, and it should come as no surprise to you. I'm not surprised at all.
I'm not saying it's not an overreaction. I'm saying that there are black people who will be cordial with you like a brother, and who will call another black person an animal. They don't all hate themselves, either. They can be some of the proudest people you know. They're proud of black skin, but they don't some black-skin-having people
deserve to have black skin. Pride ends where shame begins.