Killer Dogs (also known as German Shepherds and popularly as just Dogs) are enemies in Wolfenstein 3D and Spear of Destiny. A canine of the German Shepherd (Deutscher Schäferhund) breed, this enemy has a biting attack and only one hit point, which makes it very easy to kill with any weapon, even the knife. They can however, be nuisances in groups. Against a prepared player, even large packs of dogs are unlikely to do any damage before being killed, so their cost to a player's ammo supply is actually the only concern. This is easily remedied by backing up (ideally into a narrow hall or doorway) while killing them all with the knife.