In all my excitement yesterday I forgot to link details about the hat! D'oh!
It's the Teddy Bear Hat by Diane Langan - which can be purchased at her etsy shop which is here.
I used Stylecraft Special Chunky for the main hat and the muzzle - the black yarn was DK acrylic that I held double, and I used a 6mm hook. I have to write all these details down or I know a couple of months from now I'll be wondering what I did :)
Uh oh, I just browsed through her shop and realised she has other critter hats - owl, raccoon, fox(!), hello kitty... I may be in trouble ;) That's as well as all the patterns I found on ravelry yesterday!