The Coats of domestic dogs are of two versions: "double" becoming popular in dogs (along with wolves) originating from colder climates, built up of the coarse guard hair and also a smooth down hair, or "one", With all the topcoat only. Breeds may have an occasional "blaze", stripe, or "star" https://remingtonzfkos.vblogetin.com/37394340/dogs-an-overview