The Coats of domestic dogs are of two varieties: "double" getting common in dogs (and also wolves) originating from colder climates, made up of a coarse guard hair along with a tender down hair, or "one", with the topcoat only. Breeds can have an occasional "blaze", stripe, or "star" https://esabsentinel96307.blog-gold.com/39593724/not-known-incorrect-statements-about-dogs