Despite the name, the Australian Shepherd was developed on ranches in the western United States in the 1800s, from Spanish and Basque herding dogs and collie types that arrived with sheep shipped from Australia. 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, amber or a mix.
Many Aussies are loyal, quick learners and happiest with a task, though they're often reserved with strangers. Without daily exercise and mental work, that drive can turn into barking, chewing or herding kids and other pets. They suit active adopters who like training, but each dog's personality varies, and breed alone never tells the whole story.