Australian Shepard

Australian shepherds—affectionately called Aussies—were bred as herding and working dogs on the American Frontier. Since their introduction in the 1800s, the active, playful, and unfailingly loyal Aussie has become one of the country's most popular dog breeds. Their high intelligence and eager-to-please nature means they're quick learners, which is a great attribute for training, but also means they can be a bit of a handful for novice owners.