Despite the name, the Australian Shepherd took shape on ranches in the American West during the 1800s, likely from Spanish and Basque herding dogs crossed with collie types that arrived with sheep shipped from Australia. Ranchers prized its stamina and quick thinking, and rodeo shows in the mid-1900s made it famous. Aussies are medium-sized, usually 40 to 65 pounds, with a weather-resistant double coat in merle, black or red, often with white and copper trim and eyes that can be blue, brown or a mix.
Many Aussies are intelligent, devoted and tireless. They bond closely with family and can be reserved with strangers. Without daily exercise and mental work, that drive can turn into herding children, chewing or barking, so they suit active adopters who enjoy training. Each dog differs, and an adult's personality is easier to read than a puppy's.