Hi Jeff,
Like this image a lot. Might be interesting to do a crop adjustment and knock out the top third of the frame, creating a "landscape" look to it. Also, if you used neat image, I'm reckoning maybe a bit of a grainy look would be effective here. I like the lighting a lot, and the pockets of shadows in the snow works well.
My dogs do this. Difficult to expose correctly for snow and white and black fur. There is a lack of detail in the black dog, but I'm not sure how you would get much better detail without overexposing the snow detail. I know that animals are hard to direct, but I find the disturbed snow/ice on the bottom right a little disturbing. But a great picture!
Excellent composition and exposure! This must have been a difficult shot to not over-expose the snow, yet under-expose the black dog. I wish I can see more details in the black dog, but still an excellent photograph!