The Most Evil Thing I Have Ever Seen... But so cuddly!!
A while back I found a really useful fleece hat tut on DeviantArt, and have used that general idea in various ways in a few projects.
In this one, I basically made a long fleece hat and sewed the white front part to one of the four panels, leaving some black showing at the top of his head. The bottom is a circle sewn to the bottom edges.