狼爪

thumb|right|Paw of a dog: A. Claw, B. Digital pads, C. Metacarpal pad, D. Dewclaw, E. Carpal pad thumb|A dog's dewclaw does not make contact with the ground while the dog is standing. This older dog's dewclaw is rounded from use while running, but it has grown.thumb|Some active dogs' dewclaws make more frequent contact with the ground while running, so they wear down naturally, as do their other claws. thumb|Double dewclaws on rear leg of dog