It has elements of both Stonehenge, as well as the Washington monument, and the leaning tower of Pisa. In this work of art, I can see the canine struggle to express it's species as strong and powerful after years of being dominated and neutered. The lone Hershey Kiss apart from the main creation symbolizes the isolation the artist is feeling by not being a part of the wolf pack community.
To create such a masterpiece through such a lowly medium speaks of your dog's incredible intellect and expressive ability. If this picture was taken right after the piece was created on a cold winter's day, I would definitely say "Steam on".