The Australian Shepherd, Aussie, is a breed developed on ranches in the United States; as early as the 1800s. Aussies have been valued for their versatility and trainability. As stock-dogs, herding trials. and eagerness to please; are highly regarded for their skills in obedience. It excels at dog sports such as dog agility, fly-ball, and frisbee. They are also highly successful search and rescue dogs, disaster dogs, detection dogs, guide, service, and therapy dogs.