bighorn, bighorn sheep, cimarron, Rocky Mountain bighorn, Rocky Mountain sheep, Ovis canadensis
['horned viper, cerastes, sand viper, horned asp, Cerastes cornutus', 'platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus', 'oxcart', 'rugby ball', 'tusker', 'guinea pig, Cavia cobaya', 'valley, vale']