any of several breeds of usually large powerful dogs bred to work as draft animals and guard and guide dogs

hardy working dog developed in Belgium for herding sheep

old French breed of large strong usually black dogs having a long tail and long wavy and slightly stiff coat

an Australian sheepdog with pointed ears

Hungarian breed of large powerful shaggy-coated white dog; used also as guard dog

large sheepdog with a profuse shaggy bluish-grey-and-white coat and short tail; believed to trace back to the Roman occupation of Britain