hammerhead, hammerhead shark
['Komodo dragon, Komodo lizard, dragon lizard, giant lizard, Varanus komodoensis', 'leopard, Panthera pardus', 'Norwegian elkhound, elkhound', 'rule, ruler', 'nematode, nematode worm, roundworm', 'echidna, spiny anteater, anteater', 'space shuttle']