The coats of domestic dogs are of two varieties: "double" staying popular in dogs (along with wolves) originating from colder climates, made up of a coarse guard hair along with a comfortable down hair, or "one", While using the topcoat only. Breeds could have an occasional "blaze", stripe, or "star" https://trevoripvyb.blogdigy.com/the-smart-trick-of-dogs-that-nobody-is-discussing-47496469