There are three different varieties of Collie based primarily on coat appearance: Collie (Smooth and Rough), Border Collie and Bearded Collie.
The Smooth and Rough Collie are considered by the AKC as varieties of the same breed and therefore are judged by the same standard with the exception of the coat.
Considered to be one of the most beautiful of dogs because of his elegant appearance, the Collies great beauty has made them one of the favorite show dogs.