Bear

Wild Bear Climbs Tree at University of Colorado, Tranquilizers Force Bear to Fall [VIDEO]
Wild Bear Climbs Tree at University of Colorado, Tranquilizers Force Bear to Fall [VIDEO]
This video is pretty intense.  A wild bear in Colorado made it's way from the mountains to the University of Colorado.  The large bear was eventually hit with a tranquilizer to bring it down to safety.  The bear was not harmed and was released back into the wild according to the Denver Post.
Grizzly Bear Vs Wolf
Grizzly Bear Vs Wolf
Be warned, this video is not for everyone.  It features two of natures deadliest creatures in a bloody, brutal, violent battle that both creatures were lucky enough to walk away from.  By no means is it the most adorable video ever.