subfamily
Pit Vipers
Crotalinae
Field notes
Children
- Rattlesnakes 17 native
- Copperheads, Moccasins, and Cottonmouths 4 native
- Massasaugas 3 native
- Bushmasters
- Temple Vipers
- Mountain Pit Vipers
- Hognosed Vipers
- Mixcoatlus
- Jumping Pit Vipers
- Ridge-nosed Tree Pitvipers
- Jumping Vipers
- Neotropical Lanceheads
- Asian Lanceheads
- Palm Vipers
- Asian Lance-headed Pitvipers
Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Most observed native pit 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
-
Prairie Rattlesnake
Crotalus viridis
10,041 observations
-
Florida Cottonmouth
Agkistrodon conanti
8,008 observations
-
Western Black-tailed Rattlesnake
Crotalus molossus
6,318 observations
-
Mojave Rattlesnake
Crotalus scutulatus
6,232 observations
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Pygmy Rattlesnake
Sistrurus miliarius
6,190 observations
-
Red Diamond Rattlesnake
Crotalus ruber
6,148 observations
-
Broad-banded Copperhead
Agkistrodon laticinctus
5,797 observations
-
Eastern Massasauga
Sistrurus catenatus
5,485 observations
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Sidewinder
Crotalus cerastes
5,131 observations
-
Eastern Diamondback Rattlesnake
Crotalus adamanteus
4,556 observations