The Vikings feared, yet admired bears, for their sheer power, courage, and the fact that they are the only wild creatures of the north, that are not scared of man! That's why the elite warriors, the Berserkers, evoked their "bear spirit" by using hallucinogenic drugs. Though they hunted bears for their furs, young orphaned cubs were often raised as "pets".
A troll is a supernatural being in Norse mythology and Scandinavian folklore. In origin, troll may have been a negative synonym for a jötunn (plural jötnar), a being in Norse mythology. In Old Norse sources, beings described as trolls dwell in isolated rocks, mountains, or caves, live together in small family units, and are rarely helpful to human beings.