AWWWWWW, this looks just like my dog Molly I had when I was little. A yorkie, right? Mine was a yokie shih tzu mix, but she looked just like this! The b&w works really well here
Pooky nicely fills the frame, and the direct, liquid-looking stare is very engaging. Slight imperfection: it looks to me like your DOF was a little shallower than you wanted and you sharpened heavily on the eyes and nose to compensate. I also see tear-stains; I always clone them out. Overall, very nice shot.