They are adorable as cubs but when adults they fierce and deadly. They will charge you down in no time. Your best bet is to run as fast and as far as you can. If there is only two paths you can take one has a direbear and one has a lv 300 Rex I would chose the Rex. But when taming you want at least two people are a rock to climb on. From there use tranq darts mostly and try not to get yourself killed.
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.
Direbear have little health compared to torpor. Keep a few tamed dodos at your ramp trap. When you've shot the bear enough for it to be bloody, throw in a dodo. It will instantly kill and eat it and start regenerating health. Give it a moment or two and continue darting. Happy hunting!