I made this for my roommate's daughter for giftmas. It was originally for me but I hate the way it fits me, I'll make another one later without the teeth.

The tutorial for the hat can be found here,

Notes: it takes a few tries to get the ears where you want them, so do tack in place and check in the mirror first! If I were to make this hat again I'd probably use a different pattern, this one was a little confusing, but I fgured it out obviously.