I like the expression he has though maybe too much black outlining under the eyes. Since the rest of the picture is done without hard lines it wouldn't stick out as much. The fur is a nice start, maybe softening it in some areas would make it look more natural rather than just moving at all over the place. You did when with the highlights on the white but having a set light source helps a lot when doing a picture. More shading on the non furred areas would finish this picture off better as well.
I hoped I could help you out, please don't take any of this the wrong way! Best wishes with future pictures.