Although there are many theories about the origin of the Australian Shepherd, the breed as we know it today developed exclusively in the United States. It probably originated in the Basque region of the Pyrenees Mountains between Spain and France, but was dubbed the Australian Shepherd because of its association with Basque shepherds who came to the United States from Australia in the 1800's.

As with most working breeds, the Australian Shepherd was initially called by many names, including Spanish Shepherd, Pastor Dog, Bob-Tail, Blue Heeler, New Mexican Shepherd, and California Shepherd.

The Aussie (as the breed is nicknamed) is a truly versatile dog. It is so sound minded that it easily adapts to various situations. Today, the Australian Shepherd serves humanity in every imaginable way: as working ranch dogs, guide dogs for the blind, hearing dogs for the deaf, pet therapy dogs, drug detectors, and search-and-rescue dogs.