I could do without the dark spot in the upper right of the frame and the leash leading off of the frame as well. I would crop more of the foreground out as well.
Having said that, the shot looks sharp in the dogs face and DOF is nice. Perhaps a little more light in the dogs left (brown) eye. I think that is the first time I've said perhaps more light on the brown eye....LOL.
Cute Pooch BTW,
Derrick