family
Vipers
Viperidae
Field notes
Children
Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Most observed native vipers All
Native to the US, by observations.
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Western Rattlesnake
Crotalus oreganus
38,608 observations
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Western Diamond-backed Rattlesnake
Crotalus atrox
31,586 observations
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Eastern Copperhead
Agkistrodon contortrix
27,786 observations
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Northern Cottonmouth
Agkistrodon piscivorus
24,510 observations
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Timber Rattlesnake
Crotalus horridus
15,672 observations
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Prairie Rattlesnake
Crotalus viridis
10,041 observations
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Florida Cottonmouth
Agkistrodon conanti
8,008 observations
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Western Black-tailed Rattlesnake
Crotalus molossus
6,318 observations
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Mojave Rattlesnake
Crotalus scutulatus
6,232 observations
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Pygmy Rattlesnake
Sistrurus miliarius
6,190 observations
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Red Diamond Rattlesnake
Crotalus ruber
6,148 observations
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Broad-banded Copperhead
Agkistrodon laticinctus
5,797 observations
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Eastern Massasauga
Sistrurus catenatus
5,485 observations
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Sidewinder
Crotalus cerastes
5,131 observations
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Eastern Diamondback Rattlesnake
Crotalus adamanteus
4,556 observations