Note:  Do not rely on this information. It is very old.

Sheep Dog

Sheep-Dog, a somewhat loose name for dogs used by shepherds and drovers. In the north the collie is the sheep-dog; in the south this breed is replaced by one more stoutly built and with a stiffer coat, probably due to an infusion of mastiff blood. The Bob-tailed Sheep-dog, with grey curly coat, is sufficiently defined by its name.