At the end of the 19th century, sheep breeding began to develop rapidly in America. In search of a better life, shepherds from Australia moved to this distant country, taking their dogs with them. The Americans appreciated the intelligence and endurance of imported animals. Having crossed them with their own species, they bred a new breed – the Aussie, who took hard work and some features from their Australian parents, and from the American ones – weather resistance and resistance to diseases common on this continent.