The unusual angle and strong composition work beautifully. I like the fine fur around the edges against the snow creating a fine detail that contrasts with the harshness everywhere else. I love the way the white patch of fur blends with the snow making a dog of two parts (more striking in the thumbnail)
Could be fun to play with the levels to make the white fur and snow merge even more?
Oh I love these colours!!! The texture of the snow is exquisite....and not quite figured out if your 'shadow' is of the same mind and so is transfixed by it, or simply walking tentatively without knowledge of what lies beneath.