Although a large, active dog, the Collie is both elegant and graceful, appearing to float over the ground as it runs. Loyal and affectionate, the breed is naturally responsive to humans. Marked characteristics include the beautiful coat of the rough variety and the breed's lean wedge-shaped head. The coat can be rough or smooth and the four accepted colors are sable and white, tri-color, blue merle and white. The best-known Collie is, of course, the famous Lassie.
The Collie is a lithe, strong, responsive, active dog, carrying no useless timber, standing naturally straight and firm. The deep, moderately wide chest shows strength, the sloping shoulders and well-bent hocks indicate speed and grace, and the face shows high intelligence. The Collie presents an impressive, proud picture of true balance, each part being in harmonious proportion to every other part and to the whole.