"Yule Cat" is an Icelandic critter that devours lazy humans at xmastime, as depicted in this wonderful  DrVirus pic: http://www.furaffinity.net/view/3170859

The American version of Yule Cat lurks amid the colorful detritus, eyes glowing demonically, waiting to leap out and lacerate the ankles of anyone unwary enough to cross her path.

This is my dad's cat Gracie, sister to my Aly (they look exactly the same, except Gracie is twice as big).