Crotalus

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Noun1.Crotalus - large rattlesnakesCrotalus - large rattlesnakes; seldom bite unless startled or pursuing prey
reptile genus - a genus of reptiles
Crotalidae, family Crotalidae - New World vipers: pit vipers
banded rattlesnake, Crotalus horridus horridus, timber rattlesnake - widely distributed in rugged ground of eastern United States
Crotalus viridis, prairie rattler, prairie rattlesnake, Western rattlesnake - widely distributed between the Mississippi and the Rockies
Crotalus cerastes, horned rattlesnake, sidewinder - small pale-colored desert rattlesnake of southwestern United States; body moves in an s-shaped curve
Crotalus atrox, Western diamondback, Western diamondback rattlesnake - largest and most dangerous North American snake; of southwestern United States and Mexico
Crotalus lepidus, rock rattlesnake - mountain rock dweller of Mexico and most southern parts of United States southwest
Crotalus tigris, tiger rattlesnake - having irregularly cross-banded back; of arid foothills and canyons of southern Arizona and Mexico
Crotalus scutulatus, Mojave rattlesnake - extremely dangerous; most common in areas of scattered scrubby growth; from Mojave Desert to western Texas and into Mexico
Crotalus mitchellii, speckled rattlesnake - markings vary but usually harmonize with background; of southwestern Arizona and Baja California