Wolverines have a bad reputation as being violent beasts, most likely as a result of being associated with Wolverine the X-Man. Of course they are wild animals, but wolverines are actually fantastic search and rescue animals, as portrayed by Jasper the wolverine. 

To demonstrate this helpful characteristic, Casey was covered in a snow to mimic a body trapped under an avalanche. Amazingly, Jasper quickly digs Casey out and drags him out of the snow to safety. 

The Natationl Geographic Wild video is actually 10 months old, but has started to trend recently, appearing on BestOfYouTube, IAmBored, and VideoSift