Most observed native pit vipers
Native to the US, by how plants support them, most observed first.
Flower visitors All
1 native pollinators and other flower visitors, most observed first.
Other species All
23 native species with no plant ties on record, most observed first.
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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