Chaosmancer
Legend
Is there a predator that isn't vicious and cruel?
Probably, though I can't think of one off the top of my head. Does it matter?
It's been a while since I took any anthroplogy courses, but I don't think you'd find many anthropologist who would agree that Neaderthal wasn't human. I believe Homo habilis is still considered by many to be the creature we'd recognize as human and they were around 1.5-2.5 million years ago.
But they would agree that they are not Homo Sapien Sapien, which are the only humans anyone in living memory has ever talked to. But, this just goes to show many of these concepts are very loose and stretchy.
Animals can communicate with one another, but it's not widely accepted that they have a language. The way we communicate with one another is fundamentally different from how animals communicate with one another.
How so? Language is the convenience of ideas. Animals do that. Sure, there are things we communicate that we do not seem to see them communicating in the same ways, but we are not the same species.