If you find this thing RUN it took me out in two hits and completely demolished my home and murdered my raptor and my little otter cuddles please like to pay respects to my little cuddles kept me warm on the cold nights
I only got a chance of taming this sort of early in game because managed to find a good spot on top of a tall rock where it can't reach, and shoot tranq arrows. Scared to tame a 2nd one. It killed me in like 2+ swipes as I still was new then. Now the same Theriz that killed me once is my best friend.