Its pretty good! I suck at human anatomy, so when it comes to drawing furry type characters, while Id probably do ok with the head Id do terrible with the body. But I dont think your fox's head looks bad at all.
I'm not sure about the head. It kind of looks okay, but I don't like how it works with the body overall (which has a few issues of it's own). I wanted a more definitive profile for the face, but I don't think I succeeded.