You would think so, right? But funnily enough, whenever we find a new type of hominid that existed around us (neanderthals, denisovans, homo florensiensis), we find out that humans interbred with them and they are a part of our modern human DNA.

I bet humans learned to "other" things that look like humans so they could do things like avoid the sick and dead, dehuminize other tribes to kill them in war. All the very human things we do now.