Completely agree.My cold, official critique is: Good sharpness and black and white tones. The composition is pleasing, although the cropping is a little tight on the right hand side. Depth of field was well chosen. The dog tag is unfortunately quite distracting (I would recommend moving it or removing it, and reshooting), as is the black border around the image.
My warm, humane critique is: Nice dog! A snapshot you'll enjoy for years.