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A two-striped forest pitviper (Bothriopsis bilineata) at the Nashville Zoo in Tennessee.

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A two-striped forest pitviper (Bothriopsis bilineata) at the Nashville Zoo in Tennessee.

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A male Persian horned Viper (Pseudocerastes persicus) at Arabia’s Wildlife Centre in Sharjah, United Arab Emirates.

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A male Persian horned Viper (Pseudocerastes persicus) at Arabia’s Wildlife Centre in Sharjah, United Arab Emirates.

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A male Persian horned Viper (Pseudocerastes persicus) at Arabia’s Wildlife Centre in Sharjah, United Arab Emirates.

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An Oman ​saw-scaled viper (Echis omanensis) at Arabia’s Wildlife Centre in Sharjah, United Arab Emirates.

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An Oman ​saw-scaled viper (Echis omanensis) at Arabia’s Wildlife Centre in Sharjah, United Arab Emirates.

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A male Persian horned Viper (Pseudocerastes persicus) at Arabia’s Wildlife Centre in Sharjah, United Arab Emirates.

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A male Persian horned Viper (Pseudocerastes persicus) at Arabia’s Wildlife Centre in Sharjah, United Arab Emirates.

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A female African bush viper (Atheris squamigera) from a private collection.

These snakes range in color dramatically, ranging from green to orange to yellow.

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Two female African bush vipers (Atheris squamigera) from a private collection.

These snakes range in color dramatically, ranging from green to orange to yellow.

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Two female African bush vipers (Atheris squamigera) from a private collection.

These snakes range in color dramatically, ranging from green to orange to yellow.

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A female African bush viper (Atheris squamigera) from a private collection. These snakes range in color dramatically, ranging from green to orange to yellow.

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Two female African bush vipers (Atheris squamigera) from a private collection.

These snakes range in color dramatically, ranging from green to orange to yellow.

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Two female African bush vipers (Atheris squamigera) from a private collection.

These snakes range in color dramatically, ranging from green to orange to yellow.

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An Ocellate mountain viper (Montivipera wagneri) at the St. Louis Zoo.

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An Ocellate mountain viper (Montivipera wagneri) at the St. Louis Zoo.

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A Pakistan saw scale viper (Echis carinatus carinatus) at Reptile Gardens.

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A Pakistan saw scale viper (Echis carinatus carinatus) at Reptile Gardens.

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A desert horned viper (Cerastes cerastes cerastes) at Reptile Gardens.

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A desert horned viper (Cerastes cerastes cerastes) at Reptile Gardens.

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A desert horned viper (Cerastes cerastes cerastes) at Reptile Gardens.

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A desert horned viper (Cerastes cerastes cerastes) at Reptile Gardens.

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A jararaca (Bothrops jararaca) at the Kentucky Reptile Zoo in Slade, Kentucky.

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A Roman’s saw-scaled viper (Echis leucogaster) at the Kentucky Reptile Zoo in Slade, Kentucky.

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A Roman’s saw-scaled viper (Echis leucogaster) at the Kentucky Reptile Zoo in Slade, Kentucky.

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A Sindh saw-scaled viper (Echis carinatus sochureki) at the Kentucky Reptile Zoo in Slade, Kentucky.

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A Sindh saw-scaled viper (Echis carinatus sochureki) at the Kentucky Reptile Zoo in Slade, Kentucky.

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A Sindh saw-scaled viper (Echis carinatus sochureki) at the Kentucky Reptile Zoo in Slade, Kentucky.

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A jararaca (Bothrops jararaca) at the Kentucky Reptile Zoo in Slade, Kentucky.

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A Broadley’s bush viper (Atheris broadleyi) at Reptile Lagoon in Hamer, South Carolina.

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A Broadley’s bush viper (Atheris broadleyi) at Reptile Lagoon in Hamer, South Carolina.

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A jararacussu (Bothrops jararacussu) at Reptile Lagoon in Hamer, South Carolina.

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A Broadley’s bush viper (Atheris broadleyi) at Reptile Lagoon in Hamer, South Carolina.

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A Broadley’s bush viper (Atheris broadleyi) at Reptile Lagoon in Hamer, South Carolina.

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A jararacussu (Bothrops jararacussu) at Reptile Lagoon in Hamer, South Carolina.

Photo: Julie Jensen Director of Marketing | WVC O: 866.800.7326 | D: 702.443.9249 | E: j.jensen@wvc.org

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