Probably the most vile, evil, and sadistic being in ark. This ferocious little lizard will put you to sleep with its magic jump-and-toe-jab-venom. Once you are asleep, most Troodon will just dance around your unconscious body until you wake back up, only to knock you out again. These beasties are even worse when they travel in packs. Do yourself a favor and upgrade your armor and weapons (especially) asap. The faster you can kill them, the better.
These have to be the worst things in the game. I was leveling up ,y level 213 Raptor and all of a sudden 5 of them at once attack me, knock me out, and almost kill me but my raptor distracted them and I woke up and ran away.