The eastern cottontail has mostly brown fur guarded by long, coarse grey and black hairs. Its fur is shorter and brown in summer and longer and grey in winter. It has a white belly and a fluffy, white tail. It has long ears; big, dark eyes; and often has a white spot on its forehead. It has large hind legs and feet. The eastern cottontail grows 15 to 18 inches in length and weighs no more than 3 pounds.