horned viper, cerastes, sand viper, horned asp, Cerastes cornutus
['nematode, nematode worm, roundworm', 'cricket', 'marmot', 'tiger shark, Galeocerdo cuvieri', 'tailed frog, bell toad, ribbed toad, tailed toad, Ascaphus trui', 'leafhopper', 'chiton, coat-of-mail shell, sea cradle, polyplacophore']