Science Fact Finder | The Animal World - Which Poisonous Snakes Are Native To The United States?

Which poisonous snakes are native to the United States?

Less than one-third of the 2,500 to 3,000 snake species are classified as poisonous, and fewer than 300 species may be fatal to humans. In fact, more than twice as many people in the United States are killed annually by bees, wasps, and scorpions than by snakes.

Snake	Average Length
Rattlesnakes
Eastern diamondback (Crotalus adamateus)	33 to 65 inches (84 to 165 centimeters)
Western diamondback (Crotalus atrox)	30 to 65 inches (76 to 165 centimeters)
Timber rattlesnake (Crotalus horridus horridus)	32 to 54 inches (81 to 137 centimeters)
Prairie rattlesnake (Crotalus viridis viridis)	32 to 46...

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