This striking German Shepherd is at attention, perhaps eyeing an intruder or poised to chase a toy that someone has thrown. One of the United States most popular breed of dog, they are used by police forces and the military in a variety of ways. Originally from Germany, these beautiful dogs are approachable, direct and fearless, with a strong, muscular body. Alex Zeng does a fine job of showcasing the expression on this dogs face as well as its muscularity.