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39 vipers species
Sistrurus tergeminus
Agkistrodon bilineatus
Agkistrodon conanti
Agkistrodon laticinctus
Agkistrodon piscivorus
Crotalus adamanteus
Crotalus triseriatus
Crotalus ruber
Trimeresurus mcgregori
Trimeresurus albolabris
Crotalus molossus
Crotalus willardi
Crotalus ehecatl
Vipera aspis
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