The Collie stands 23 to 26 inches at the shoulder and weighs between 55 and 75 pounds. He has a large, lithe body and a long muzzle. The breed comes in two varieties, Rough and Smooth. The Rough (Lassie-type) Collie has a beautiful thick shedding coat with an undercoat that requires daily brushing. The Smooth Collie's coat is much shorter and requires less care. The color may be sable-and-white, tricolor (black, white, and tan), blue merle (marbled blue-gray, black, and white), or white with sable, tricolor, or blue merle markings.
Ancestors of the Collie were introduced into Scotland and England from Iceland 400 years ago, but it was as guardians of the flock that they acquired their name in Scotland. He was first used as a cattle and sheep drover and then as a herder.