The coats of domestic dogs are of two varieties: "double" being frequent in dogs (and also wolves) originating from colder climates, made up of the coarse guard hair and also a gentle down hair, or "solitary", With all the topcoat only. Breeds can have an occasional "blaze", stripe, or "star" https://chatgpt43310.canariblogs.com/the-dogs-diaries-46902666