History about The Australian Shepherd
The Australian shepherd breed was developed in the United States. Basque people from the Pyrenees of northeastern Spain/southwestern France came to the American West in the mid-19th century to herd sheep and brought dogs with them. The name “Australian shepherd” may have reflected those who came to the U.S. after first working in Australia or the origin of the herds of sheep, but this is not clear. These dogs are not registered in Australia as a native breed.
American ranchers raised and bred the dogs as livestock herders and farm workers. They do well at high altitudes such as in the Rocky Mountains, Sierra Nevada, and high plains where ranchers pastured their livestock. As Western movies, television series, and rodeos were popular after World War II, the breed became well known.
Aussie enthusiasts and breeders have worked hard to keep the breed true to its heritage. Aussies were first recognized by the American Kennel Club (AKC) in 1991.
Source: The Spruce Pets