The Coats of domestic dogs are of two varieties: "double" currently being widespread in dogs (as well as wolves) originating from colder climates, manufactured up of the coarse guard hair as well as a soft down hair, or "solitary", Along with the topcoat only. Breeds could have an occasional "blaze", https://andreulwjs.blogdeazar.com/31896746/the-definitive-guide-to-dogs