ancient and sturdy breed of working dog that dates back to the Roman invasion of Helvetia (now Switzerland); used as a draft dog for farmwork, to pull supplies, and to guard flocks of sheep; coat is thick, long, and somewhat wavy and is mostly black with white and tan markings on face, chest, belly, feet, and rump; furry ears are set high on head but are long enough to hang down side of head; tail is full and bushy and is carried low and curving when relaxed; eyes are oval and dark brown; adult stands 21–28 in. (53–71 cm) tall at shoulders and weighs 50–70 lbs (23–32 kg); alert and good-natured demeanor; favorite draft dog of the Bernese weavers because it could pull heavy loads to market,