Contains

• shepherd dog

  Any of various usually long-haired breeds of dog reared to herd and guard sheep.

• watchdog

  A dog trained to guard property.

• Sennenhunde

  Any of four Swiss breeds.

• sled dog

  A dog trained to draw a sled usually in a team.

• mastiff

  An old breed of powerful deep-chested smooth-coated dog used chiefly as a watchdog and guard...

• bulldog

  A sturdy thickset short-haired breed with a large head and strong undershot lower jaw; developed...

• guide dog

  A dog trained to guide the blind.

• boxer

  A breed of stocky medium-sized short-haired dog with a brindled coat and square-jawed muzzle...

• bull mastiff

  Large powerful breed developed by crossing the bulldog and the mastiff.

• Great Dane

  Very large powerful smooth-coated breed of dog.

• hearing dog

  Dog trained to assist the deaf by signaling the occurrence of certain sounds.

• Saint Bernard

  A Swiss alpine breed of large powerful dog with a thick coat of hair used as a rescue...

• seizure-alert dog

  A dog that can alert or assist people with seizure disorders.

• Eskimo dog

  Breed of heavy-coated Arctic sled dog.

• police dog

  Any dog trained to assist police especially in tracking.