I know, it's difficult, if not impossible, to pose a dog, but the stray hair shooting up of the nose into the lower left of the eye is distracting. All others help convey the message.
oh gosh, how adorable is your model. his calm composure and elegant pose, whilst still looking interesting and have emtion in the eyes is outstanding. Oh and the photographer is pretty good too 9
What an adorable scruffy little face :-) I'd like to see his(?) eyes a little more clearly (maybe dodge to lighten a little and bring out the catchlights and roundness).
He-he. Bet he/she looks more like a rat when wet. :-) All kidding aside, this is a nice portrait with good detail. Lighting may be a tad hot on the top of the head. The black bg works well with this. Good luck!