High Quality Content by WIKIPEDIA articles! The Australian shepherd is a breed of herding dog that was developed on ranches in the Western United States. Despite its name, the breed, commonly known as an Aussie, did not originate in Australia They acquired their name because some of the Australian sheepdogs arrived in the United States with boatloads of Australian sheep. The breed rose gradually in popularity with the boom of western riding after World War I. They became known to the general public through rodeos, horse shows, and through Disney movies made for television.