The collie is a large to medium-sized dog. The outer layer of the Rough Collie’s double coat is thick and long. The Smooth Collie has also a double coat though it is shorter on the outside.Black, white, and tan, blue merle, blue merle and white, blue merle, white, and tan, sable , sable and white, white merle, and white are the most common coat colors.They are 22 to 34 kgs (50 to 75 pounds) in weight, 22 to 26 inches (55 to 66 cm) tall, and have an average lifespan of 12 to 14 years.They are loyal, friendly, and intelligent.
