The breed has a coat of straight, stiff guard hairs and a fine, soft, thick undercoat. There should be no curl in the hair at all. The colour should be black with white markings. Often the jet black hair is slightly tinted with brownish highlights on the ends giving it an iridescent quality. The ideal colour percentage is around 70% black and 30% white. The bushy tail curls in a circle over the back in a ring and has a white tip. It falls gently onto the dog's back or to one side. Purebred Karelian Bear Dogs have tails that curve into a circle rather than a sickle. Black speckles in the white sections of fur are considered to be a fault.