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Agkistrodon bilineatus
Western Cantil
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Agkistrodon contortrix
Eastern Copperhead
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Agkistrodon laticinctus
Broad-banded Copperhead
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Agkistrodon piscivorus
Northern Cottonmouth
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Agkistrodon taylori
Ornate Cantil
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Atheris chlorechis
West African Green Bush Viper
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Atheris squamigera
Southern Green Bush Viper
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Bitis arietans
Common Puff Adder
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Bitis caudalis
Horned Adder
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Bitis gabonica
Gaboon Adder
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Bitis nasicornis
African Nose-horned Viper
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Bitis rhinoceros
Rhinoceros Viper
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Bothriechis schlegelii
Eyelash Palm Pitviper
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Bothrops asper
Central American Lancehead
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Bothrops moojeni
Brazilian Lancehead
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Bothrops taeniatus
Speckled Forest Pitviper
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Calloselasma rhodostoma
Malayan Pitviper
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Cerastes cerastes
Sahara Horned Viper
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Cerastes gasperettii
Middle Eastern Horned Viper
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Cerastes vipera
Sahara Sand Viper
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Craspedocephalus borneensis
Bornean Flat-nosed Pitviper
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Craspedocephalus trigonocephalus
Sri Lankan Green Pitviper
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Crotalus abyssus
Grand Canyon Rattlesnake
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Crotalus adamanteus
Eastern Diamondback Rattlesnake
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Crotalus aquilus
Queretaran Dusky Rattlesnake
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Crotalus atrox
Western Diamondback Rattlesnake
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Crotalus basiliscus
Mexican West Coast Rattlesnake
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Crotalus catalinensis
Santa Catalina Rattlesnake
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Crotalus cerastes
Sidewinder
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Crotalus cerberus
Arizona Black Rattlesnake
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Crotalus concolor
Midget Faded Rattlesnake
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Crotalus culminatus
Northwestern Neotropical Rattlesnake
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Crotalus durissus
South American Rattlesnake
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Crotalus enyo
Baja California Rattlesnake
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Crotalus helleri
Southern Pacific Rattlesnake
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Crotalus horridus
Timber Rattlesnake
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Crotalus lepidus
Common Rock Rattlesnake
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Crotalus lutosus
Great Basin Rattlesnake
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Crotalus molossus
Western Black-tailed Rattlesnake
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Crotalus oreganus
Northern Pacific Rattlesnake
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Crotalus polystictus
Mexican Lance-headed Rattlesnake
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Crotalus pyrrhus
Southwestern Speckled Rattlesnake
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Crotalus ruber
Red Diamond Rattlesnake
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Crotalus scutulatus
Mojave Rattlesnake
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Crotalus unicolor
Aruba Rattlesnake
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Crotalus vegrandis
Uracoan Rattlesnake
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Crotalus viridis
Prairie Rattlesnake
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Crotalus willardi
Ridge-nosed Rattlesnake
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Daboia palaestinae
Palestinian Viper
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Daboia russelii
Indian Chain Viper
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Daboia siamensis
Siamese Chain Viper
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Echis carinatus
Common Carpet Viper
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Gloydius saxatilis
Rock Mamushi
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Lachesis muta
South American Bushmaster
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Lachesis stenophrys
Central American Bushmaster
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Macrovipera lebetinus
Blunt-nosed Viper
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Montivipera raddei
Armenian Mountain Viper
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Ovophis okinavensis
Kufah
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Parias sumatranus
Grey-eyed Sumatran Pitviper
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Porthidium nasutum
Rainforest Hognosed Pitviper
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Proatheris superciliaris
Lowland Swamp Viper
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Protobothrops jerdonii
Spotted Mountain Pitviper
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Pseudocerastes fieldi
Western False Horned Viper
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Sistrurus catenatus
Eastern Massasauga
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Sistrurus miliarius
North American Pygmy Rattlesnake
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Sistrurus tergeminus
Western Massasauga
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Trimeresurus albolabris
Southeast Asian White-lipped Tree Pitviper
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Trimeresurus cardamomensis
Cardamom Mountains Green Pitviper
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Trimeresurus erythrurus
Red-tailed Pitviper
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Trimeresurus macrops
Big-eyed Green Pitviper
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Trimeresurus purpureomaculatus
Mangrove Pitviper
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Trimeresurus venustus
Venus Pitviper
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Tropidolaemus wagleri
Speckled Pitviper
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Vipera ammodytes
European Nose-horned Viper
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Vipera aspis
Asp Viper
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Vipera berus
Northern Eurasian Viper
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Vipera dinniki
West Caucasian Viper
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Vipera latastei
Snub-nosed Viper
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Vipera ursinii
Meadow and Karst Vipers
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Zhaoermia mangshanensis
Mangshan Pitviper
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