Dire Bears can be easily killed while be tranquilized, so it is best to utilize narcotic traps for easy taming. Just use dododex to see the amount of torpor the Dire Bear has. One set (2 traps) does 240 torpor so put down enough to raise its torpor so you can knock it out with one or two tranquilizer arrows. Make sure not to knock it out with the trap as you won't be able to tame it.
Probably the most versatile land creature. Can eat berries and meat. Hard to tame unless you use DARTS or a SNOW OWL to heal it during tranq arrow-ing it with a x-bow.
Probably best to put HP>Dmg. These things are trucks but don't get to cocky.