The coats of domestic dogs are of two kinds: "double" becoming prevalent in dogs (together with wolves) originating from colder climates, created up of the coarse guard hair along with a soft down hair, or "solitary", with the topcoat only. Breeds might have an occasional "blaze", stripe, or "star" https://archerfvjyn.yomoblog.com/38191351/9-simple-techniques-for-dogs