Alcohol, these things know how to party, they seem to be pretty common, for me at least, and you should probably tame after or on level 36 (Mainly to get beer barrels). They throw rocks and punch things into Oblivion. Pretty good tames all around.
Oh HELL. This thing is scary. When it comes to this game, I am a wimp. You see, I tried to tame it with stimberries, but a bit after I fed it the first Berry, this jerk turned around and attacked me! So I did the smart thing. I RAN. I ran home, and somehow managed to survive. These things are BRUTES.