A Pope’s tree viper (Trimeresurus popeorum) from a private collection.
A Pope’s tree viper (Trimeresurus popeorum).
Armenian viper (Montivipera raddei) at the St. Louis Zoo.
A federally threatened New Mexico ridge-nosed rattlesnake (Crotalus willardi obscurus) at the Arizona Sonora Desert Museum.
Orlov’s viper (Vipera orlovi) at the St. Louis Zoo.
Nikolsky’s viper (Vipera nikolskii) at the St. Louis Zoo.
An endangered Hermon Mountain viper (Vipera bornmuelleri) at the St. Louis Zoo.
Ocellate mountain viper (Montivipera wagneri) at the St. Louis Zoo.
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