hammerhead, hammerhead shark
['Leonberg', 'breakwater, groin, groyne, mole, bulwark, seawall, jetty', 'grey fox, gray fox, Urocyon cinereoargenteus', 'hognose snake, puff adder, sand viper', 'trilobite', 'chiton, coat-of-mail shell, sea cradle, polyplacophore', 'sidewinder, horned rattlesnake, Crotalus cerastes']