Tony Phelps / Horned adder {Bitis caudalis} hidden amongst lose stones, Great Karoo, South Africa.
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Martin Gabriel / Horned adder {Bitis caudalis} camouflaged against rocks. Namib-Naukluft NP, Namib desert, Namibia
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Tony Phelps / Horned adder {Bitis caudalis} 'cratered' in gravel stones, Great Karoo, South Africa
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Tony Phelps / Horned adder {Bitis caudalis} 'cratered' in gravel stones, Great Karoo, South Africa
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Tony Phelps / Horned adder {Bitis caudalis} 'cratered' in ambush mode in gravel plain habitat, Beaufort, West Great Karoo, South Africa
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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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Tony Phelps / Horned adder {Bitis caudalis} South Africa
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Tony Phelps / Horned adder {Bitis caudalis} 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 / Many-horned Adder (Bitis cornuta) portrait of venomous snake, native to Africa
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Michael & Patricia Fogden / Horned Adder (Bitis caudalis) drinking moisture from its skin, desert, southern Africa
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Paul Hobson / Horned adder {Bitis caudalis} Namibia
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Paul Hobson / Horned adder {Bitis caudalis} Namibia
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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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Tony Phelps / Horned Adder (Bitis caudalis) feeding on Lizard prey(Pedioplanis sp) Gt Karoo, South Africa
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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.