All Border Collies have in their hair a red version of melanin, called phaeomelanin.In the black dogs, the black eumelanin covers the appearance of the red.

• 所有的边境在它们的毛发中都有黑色素的红色版，称之为phaeomelanin（棕黑素），在黑色犬中，黑色的真黑素掩盖了红色色素。