The Australian Shepherd Dog was developed to be a working dog, specifically to assist with the herding of animals. The breed was introduced to the United States in the 1800?s, accompanying the Basque Shepherds that emigrated from Australia. The origin of the Basques began in the Spanish Styrene?s and the breed?s ancestry may be traced back to the Spanish Shepherd dogs that lived during the early days of the United State?s colonization. The population of the Australian Shepherds rose significantly following World War II and the breed gained popularity due to their role in rodeos, horse shows and growing media attention. The American Kennel Club finally recognized the Australian Shepherd in 1991.