I'm still very new to the game, only like level 6. But while I was looking for a triceratops to tame, two of these guys spawned right next to me, killed me instantly and are ignoring all the other tasty dinos to camp around my body so I can't get all my stuff. So now I'm stuck in a deathloop trying to get my stuff back, searching the closest bag out of 7-12 bags, and having them kill me again. These guys suck.