Wolverine

The wolverine is the largest member of the weasel family. It's a pretty vicious creature. And "the nose knows," because if a carcass is under an avalanche the wolverine can smell it. The wolverine can smell a carcass 20 feet deep under snow. The wolverine can run on snow very well. Its got built in snow shoe. It can run up to 30 mph on deep snow. In fact, snow is what the wolverine is all about. But unfortunately they're quite endangered because of lack of habitat. Wolverines like to live around very snowy places, that's why they live around Alaska.

(photo from animal.discovery.com)