Border Collie
The Border Collies have historically been selected for working ability, and not looks, they vary widely in appearance. In general, the Border Collie is a medium-sized dog without extreme physical characteristics and a moderate amount of coat. Their double coats can be anywhere from slick to lush, and can come in many colors, although black and white is by far the most often seen at conformation shows and herding trials and therefore the most common in public perception; tricolor (black/tan/white) and red and white also occurs regularly, with other colors such as, blue and white, red merle, blue merle, or sable seen less frequently. The Border Collie's eye color varies from deep brown to amber or blue with occasionally one eye of each color. Their ears are also highly variable, some have fully erect ears, some have fully dropped and other are semi-erect (similar to that of the Rough Collie).