The chest of this character came out well, and his chest kind of reminds me of your shirtless picture somewhere in your galleries. As for the head, I think you need some work as your fox character in one of the other pictures had a very well formed head whereas this character's head is a bit out of proportion. Showing the teeth was a good idea, and I like the idea you were trying to convey here. I would reuse what you did for the chest and rework the head especially around the ears, eyes, and the muzzle as then you would have a really realistic looking character.

You have a good start here, and I would use this image as practice to build upon your future wolf drawings.