Plesiogulo was a whopping big prehistoric mustelid - about 72 pounds - a sort of super-wolverine, widely distributed but rather rare. Here it's on the Eastern European steppes.

Well, I'm not a professional paleoartist, although I tried to the best of my ability - there aren't many other reconstructions online, or much info, so take this version with a grain of salt.
Progress shots: http://www.furaffinity.net/view/7371658/