Expression on the dog's face and the crop here are excellent. Either the dog moved or the camera moved just enough to lose the crisp focus you were looking for, but it's still a pretty good shot.
Nice idea. Not so unique. You have a PoV (point of view) problema with the lens cap, that is a bit hiden in picture. But the real issue here is focus that seems to be loosed, and I know how dificult is to shot a live animal.
I don't know, looks to me that you've just lost your lens cap... lol... unless your puppy is a nice one who will give it back! nice pic though, I like the white on white with black features, maybe a little more focus could help your photo, but keep up the good work