Proven to be a difficult foe to tame on foot. My preferred method is to make a Dino gate, a hallway of windows, then another gate on the other side. Have a naked friend attract it to the cage and get it inside, while you close the door and proceed to knock out the theriz with whatever you have. Higher levels will be a pain to take down. If your cage is wood, take down the theriz as fast as you can because he/she will destroy it decently quick. Another useful tip is that it's health and damage go up more than average when you hit a new lvl with a tamed theriz.

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