Jen Guyton / Horned adder (Bitis caudalis) camouflaged in iron-rich sand in the Kalahari Desert, South Africa.
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Emanuele Biggi / Horned adder (Bitis caudalis) camouflaged in its environment, Namib Naukluft National Park, Namibia June
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Emanuele Biggi / Horned adder (Bitis caudalis) camouflaged in its environment, Namib Naukluft National Park, Namibia June
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Emanuele Biggi / Horned adder (Bitis caudalis) camouflaged in its environment, Namib Naukluft National Park, Namibia
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Emanuele Biggi / Horned adder (Bitis caudalis) camouflaged in its environment, Namib Naukluft National Park, Namibia
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Emanuele Biggi / Horned adder (Bitis caudalis) camouflaged in its environment, Namib Naukluft National Park, Namibia
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Emanuele Biggi / Horned adder (Bitis caudalis) camouflaged in its environment, Namib Naukluft National Park, Namibia
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Emanuele Biggi / Horned adder (Bitis caudalis) camouflaged in its environment, Namib Naukluft National Park, Namibia
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Emanuele Biggi / Horned adder (Bitis caudalis) camouflaged in its environment, Namib Naukluft National Park, Namibia
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Chris Mattison / Many horned adder (Bitis cornuta) curled up, taken on white background, Springbok, South Africa.
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Chris Mattison / Many-horned adder (Bitis cornuta) curled up, taken against white background, Port Nolloth, South Africa.
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Daniel Heuclin / Horned Puff Adder (Bitis caudalis) captive from South Africa
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Chris Mattison / Many-horned / Horned Puff Adder (Bitis cornuta). Springbok, South Africa, October.
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Chris Mattison / Many-horned Adder (Bitis cornuta) curled up. Springbok, Northern Cape, South Africa.
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Chris Mattison / Many-horned / Horned Puff Adder (Bitis cornuta). Port Nolloth, South Africa, October.
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Chris Mattison / Many-horned / Horned Puff Adder (Bitis cornuta). Port Nolloth, South Africa, October.
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Mark Moffett / Horned Viper (Cerastes cerastes) in desert, Hazeva, Israel
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Tony Phelps / Horned puff / Many horned adder {Bitis cornuta} Western Cape, South Africa
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Michael & Patricia Fogden / Horned Adder (Bitis caudalis) waiting for prey, Namib Desert, Namibia
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Michael & Patricia Fogden / Horned Adder (Bitis caudalis) close-up portrait of venomous snake, sensing with tongue, gravel plains of the Namib Desert, Namibia
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Michael & Patricia Fogden / Horned Viper (Cerastes cerastes) portrait in the desert, northern Africa
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Michael & Patricia Fogden / Horned Viper (Cerastes cerastes) portrait in the desert, northern Africa
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Michael & Patricia Fogden / Horned Adder (Bitis caudalis) drinking moisture from its skin, desert, southern Africa
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Vincent Grafhorst / Horned Adder (Bitis caudalis) in desert, Namibia
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Vincent Grafhorst / Horned Adder (Bitis caudalis) in desert, Namibia
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Michael & Patricia Fogden / Horned Adder (Bitis caudalis) venomous mother with three babies, on rock outcrop in gravel plains of the Namib Desert, Namibia
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Michael & Patricia Fogden / Horned Adder (Bitis caudalis) venomous snake camouflaged against gravel plains in the Namib Desert, Namibia
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Joel Sartore / Photo Ark / Horned viper (Bitis caudalis) portrait, Sedgwick County Zoo. Captive, occurs in southwest Africa.
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Joel Sartore / Photo Ark / Horned viper (Bitis caudalis) portrait, Sedgwick County Zoo. Captive, occurs in southwest Africa.