While I have played "rug" preds, and even did a story about a man-eating bearskin rug, the creature I detail here is largely based on an Oglaf comic. You can see it here:

http://www.oglaf.com/northerner.html

It's only when you mouse-over the comic that you see how vorish it really is. "Having consumed its victim the flatbear, now resembling a normal bear, will sleep for three weeks."

This is a quick writeup and may have some typos or other problems. I'll have another look at it tomorrow.