The coats of domestic dogs are of two varieties: "double" being common with dogs (as well as wolves) originating from colder climates, made up of a coarse guard hair and a soft down hair, or "single", with the topcoat only.
గట్టి రక్షిత వెంట్రుకలతో పాటు, డబుల్ కోట్ను ఇంకా ఏమి చేస్తుంది?
soft down hair