The Rough Collie (also known as the 'Long-Haired Collie') is a long coated breed of medium to large size dog that in its original form was a type of collie used and bred for herding in Scotland. Originating in the 1800s, it is now well known through the works of author Albert Payson Terhune, and through the Lassie novel, movies, and television shows. There is also a smooth-coated variety; some breed organisations, including both the American and the Canadian Kennnel Clubs, consider the smooth-coat and rough-coat dogs to be variations of the same breed. Rough Collies generally come in shades of sable, merles, and tri-coloured. This breed is very similar to the smaller Shetland Sheepdog which is partly descended from the Rough Collie. Both Rough and Smooth collies are descended from a localised variety of herding dog originating in Scotland and Wales. The Scottish variety was a large, strong, aggressive dog, bred to herd highland sheep.