Cardigan Welsh Corgis, also known as Cardigans, Cardis or CWCs, have an alert, watchful, yet friendly expression. Their dense double coat, which sheds heavily, comes in all shades of red, sable, and brindle; black, with or without tan or brindle points; or blue merle, with or without tan or brindle points. They usually have white markings on the legs, chest, neck, muzzle, belly and tail tip and may have a blaze on the head.