Western Black-tailed Rattlesnake (Crotalus molossus)—Cochise Co, Arizona
Western Black-tailed Rattlesnake (Crotalus molossus)—Cochise Co, Arizona
Western Black-tailed Rattlesnake (Crotalus molossus)—Cochise Co, Arizona
Western Black-tailed Rattlesnake (Crotalus molossus)—Cochise Co, Arizona
Western Black-tailed Rattlesnake (Crotalus molossus)—Cochise Co, Arizona
Ornate Black-tailed Rattlesnake (Crotalus ornatus)—Val Verde Co, Texas
Ornate Black-tailed Rattlesnake (Crotalus ornatus)—Terrell Co, Texas
Ornate Black-tailed Rattlesnake (Crotalus ornatus)—Terrell Co, Texas
Timber Rattlesnake (Crotalus horridus)—Anderson Co, Texas
Arizona Black Rattlesnake (Crotalus cerberus)—Pima Co, Arizona
Western Diamond-backed Rattlesnake (Crotalus atrox)—Cochise Co, Arizona
Western Diamond-backed Rattlesnake (Crotalus atrox)—Brewster Co, Texas
Western Diamond-backed Rattlesnake (Crotalus atrox)—Terrell Co, Texas
Western Diamond-backed Rattlesnake (Crotalus atrox)—Davis Mts, Texas
Western Diamond-backed Rattlesnake (Crotalus atrox)—La Salle Co, Texas
Western Diamond-backed Rattlesnake (Crotalus atrox)—Brewster Co, Texas
Western Diamond-backed Rattlesnake (Crotalus atrox)—La Salle Co, Texas
Western Diamond-backed Rattlesnake (Crotalus atrox)—Crockett Co, Texas
Eastern Diamondback Rattlesnake (Crotalus adamanteus)—Everglades, Florida
Red Diamond Rattlesnake (Crotalus ruber)—San Diego Co, California
Red Diamond Rattlesnake (Crotalus ruber)—San Diego Co, California
Red Diamond Rattlesnake (Crotalus ruber)—San Diego Co, California
Mojave Rattlesnake (Crotalus scutulatus)—Davis Mts, Texas
Mojave Rattlesnake (Crotalus scutulatus)—Davis Mts, Texas
Mojave Rattlesnake (Crotalus scutulatus)—Cochise Co, Arizona
Mojave Rattlesnake (Crotalus scutulatus)—Cochise Co, Arizona
Prairie Rattlesnake (Crotalus viridis)—Pecos Co, Texas
Banded Rock Rattlesnake (Crotalus lepidus klauberi)—Cochise Co, Arizona
Banded Rock Rattlesnake (Crotalus lepidus klauberi)—Cochise Co, Arizona
Mottled Rock Rattlesnake (Crotalus lepidus lepidus)—Davis Mts, Texas
Mottled Rock Rattlesnake (Crotalus lepidus lepidus)—Davis Mts, Texas
Mottled Rock Rattlesnake (Crotalus lepidus lepidus)—Davis Mts, Texas
Mottled Rock Rattlesnake (Crotalus lepidus lepidus)—Terrell Co, Texas
Tiger Rattlesnake (Crotalus tigris)—Pima Co, Arizona
Tiger Rattlesnake (Crotalus tigris)—Santa Cruz Co, Arizona
Tiger Rattlesnake (Crotalus tigris)—Santa Cruz Co, Arizona
Twin-spotted Rattlesnake (Crotalus pricei)—Cochise Co, Arizona
Arizona Ridgenose Rattlesnake (Crotalus willardi willardi)—Cochise Co, Arizona
Arizona Ridgenose Rattlesnake (Crotalus willardi willardi)—Santa Cruz Co, Arizona
Southwestern Speckled Rattlesnake (Crotalus pyrrhus)—San Diego Co, California
Southwestern Speckled Rattlesnake (Crotalus pyrrhus)—San Diego Co, California
Southwestern Speckled Rattlesnake (Crotalus pyrrhus)—San Diego Co, California
Sonoran Desert Sidewinder (Crotalus cerastes cercobombus)—Pima Co, Arizona
Sonoran Desert Sidewinder (Crotalus cerastes cercobombus)—Pima Co, Arizona
Western Massasauga (Sistrurus tergeminus)—Throckmorton Co, Texas
Western Massasauga (Sistrurus tergeminus)—Throckmorton Co, Texas
Western Pygmy Rattlesnake (Sistrurus miliarius streckeri)—Anderson Co, Texas
Dusky Pygmy Rattlesnake (Sistrurus miliarius barbouri)—Everglades, Florida
Dusky Pygmy Rattlesnake (Sistrurus miliarius barbouri)—Everglades, Florida
Dusky Pygmy Rattlesnake (Sistrurus miliarius barbouri)—Everglades, Florida
Broad-banded Copperhead (Agkistrodon laticinctus)—Sutton Co, Texas
Eastern Copperhead (Agkistrodon contortrix)—Freestone Co, Texas
Eastern Copperhead (Agkistrodon contortrix)—Chapel Hill, North Carolina
Northern Cottonmouth (Agkistrodon piscivorus)—Freestone Co, Texas
Northern Cottonmouth (Agkistrodon piscivorus)—Anderson Co, Texas
Black-headed Bushmaster (Lachesis melanocephala)—Osa Peninsula, Costa Rica
Central American Bushmaster (Lachesis stenophrys)—Cartago, Costa Rica
Central American Jumping Pit Viper (Metlapilcoatlus mexicanus)—Heredia, Costa Rica
Central American Jumping Pit Viper (Metlapilcoatlus mexicanus)—Heredia, Costa Rica
Side-striped Palm Pit Viper (Bothriechis lateralis)—Alajuela, Costa Rica
Side-striped Palm Pit Viper (Bothriechis lateralis)—Alajuela, Costa Rica
Side-striped Palm Pit Viper (Bothriechis lateralis)—Alajuela, Costa Rica
Black-speckled Palm Pit Viper (Bothriechis nigroviridis)—Heredia, Costa Rica
Central American Eyelash-Viper (Bothriechis nigroadspersus)—Alajuela, Costa Rica
Central American Eyelash-Viper (Bothriechis nigroadspersus)—Heredia, Costa Rica
Central American Eyelash-Viper (Bothriechis nigroadspersus)—Limón, Costa Rica
Central American Eyelash-Viper (Bothriechis nigroadspersus)—Osa Peninsula, Costa Rica
Highland Eyelash-Pitviper (Bothriechis schlegelii)—Risaralda, Colombia
Blotched Palm-Pitviper (Bothriechis supraciliaris)—Puntarenas, Costa Rica
Blotched Palm-Pitviper (Bothriechis supraciliaris)—Puntarenas, Costa Rica
Juvenile Spotted Lancehead (Bothrops punctatus)—Chocó, Colombia
Juvenile Spotted Lancehead (Bothrops punctatus)—Chocó, Colombia
Juvenile Spotted Lancehead (Bothrops punctatus)—Chocó, Colombia
Terciopelo (Bothrops asper)—Valle del Cauca, Colombia
Rainforest Hognose Viper (Porthidium nasutum)—Chocó, Colombia
Ujarran Hognose Viper (Porthidium volcanicum)—Puntarenas, Costa Rica
Texas Coralsnake (Micrurus tener)—Anderson Co, Texas
Sonoran Coralsnake (Micruroides euryxanthus)—Cochise Co, Arizona
Madrean Mountain Kingsnake (Lampropeltis knoblochi)—Cochise Co, Arizona
Gray-banded Kingsnake (Lampropeltis alterna)—Davis Mts, Texas
Banded Watersnake (Nerodia fasciata)—Anderson Co, Texas
Diamondback Watersnake (Nerodia rhombifer) eating a Bullfrog (Lithobates catesbeianus)—Freestone Co, Texas
Diamondback Watersnake (Nerodia rhombifer)—La Salle Co, Texas
Mudsnake (Farancia abacura)—Freestone Co, Texas
Corn Snake (Pantherophis guttatus) defensive display—Everglades, Florida
Sonoran Gopher Snake (Pituophis catenifer affinis)—Presidio Co, Texas
Sonoran Gopher Snake (Pituophis catenifer affinis)—Presidio Co, Texas
Sonoran Gopher Snake (Pituophis catenifer affinis)—Cochise Co, Arizona
Chihuahuan Nightsnake (Hypsiglena jani)—Sutton Co, Texas
Lined Snake (Tropidoclonion lineatum)—Crockett Co, Texas
Coachwhip (Masticophis flagellum)—Anderson Co, Texas
Giant Parrot Snake (Leptophis ahaetulla)—Puntarenas, Costa Rica
Ornate Cat-eyed Snake (Leptodeira ornata)—Limón, Costa Rica
Mexican Hognose Snake (Heterodon kennerlyi) death feigning display—Crockett Co, Texas
Eastern Hognose Snake (Heterodon platirhinos) hooding display—Anderson Co, Texas
Eastern Hognose Snake (Heterodon platirhinos) hooding display—Anderson Co, Texas
Common Blunt-headed Tree Snake (Imantodes cenchoa)—Alajuela, Costa Rica
Western Ribbon Snake (Thamnophis proximus)—Freestone Co, Texas
Ringed Tree Boa (Corallus annulatus)—Chocó, Colombia
Forest Flame Snake (Oxyrhopus petolarius)—Alajuela, Costa Rica
Oliver's Parrot Snake (Leptophis nebulosus)—Heredia, Costa Rica
Tropical Flat Snake (Siphlophis compressus)—Puntarenas, Costa Rica
