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Which Poisonous Snakes Are Native To The United States?

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enotes | Valedictorian

Posted October 9, 2011 at 4:00 PM via web

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Which Poisonous Snakes Are Native To The United States?

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fact-finder | Valedictorian

Posted October 10, 2011 at 4:00 PM (Answer #1)

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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 inches (81 to 117 centimeters)
Great Basin rattlesnake (Crotalus viridis lutosus) 32 to 46 inches (81 to 117 centimeters)
Southern Pacific rattlesnake (Crotalus viridis helleri) 30 to 48 inches (76 to 122 centimeters)
Red diamond rattlesnake (Crotalus ruber ruber) 30 to 52 inches (76 to 132 centimeters)
Mojave rattlesnake (Crotalus scutulatus) 22 to 40 inches (56 to 102 centimeters)
Sidewinder (Crotalus cerastes) 18 to 30 inches (46 to 76 centimeters)
Moccasins
Cottonmouth (Agkistrodon piscivorus) 30 to 50 inches (76 to 127 centimeters)
Copperhead (Agkistrodon contortrix) 24 to 36 inches (61 to 91 centimeters)
Cantil (Agkistrodon bilineatus) 30 to 42 inches (76 to 107 centimeters)
Coral snakes
Eastern coral snake (Micrurus fulvius) 16 to 28 inches (41 to 71 centimeters)

Source: U. S. Department of the Navy. Poisonous Snakes of the World, p. 6.

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