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They were hunted and trapped to extinction in Washington state, but wolverines are clawing their way back. Biologists in Washington state are conducting an unprecedented study into a species we know very little about. KING 5's Gary Chittim has more on the wolverine comeback with new information and video.

Read or Share this story: http://www.king5.com/story/tech/science/environment/2014/08/03/13227950/