The Rough Collie (also known as the Long-Haired Collie) is a long-coated dog breed of medium to large size that, in its original form, was a type of collie used and bred for herding sheep in Scotland. Originating in the 1800s, There is a smooth-coated variety known as a Smooth Collie; some breed organisations, including both the American and Canadian Kennel Clubs, consider the smooth-coat and rough-coat breeds to be variations of the same breed. Rough Collies closely resemble the smaller Shetland Sheepdog or 'Sheltie', but the two breeds do not have an exclusive linear relationship.