Claus Meyer / Two-striped Forest Pit Viper (Bothrops bilineatus) coiled around plant, front view, Atlantic Forest ecosystem, Brazil
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Claus Meyer / Two-striped Forest Pit Viper (Bothrops bilineatus) hanging on a Heliconia (Heliconia sp) flower, Atlantic Forest, Brazil
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Christophe Courteau / Common lancehead / Fer de Lance Viper (Bothrops atrox) on road at night Pantanal, Brazil
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Michael D. Kern / Mexican Lancehead Rattlesnake (Crotalus polystictus) captive from Mexico
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James Christensen / Osborne's Lancehead (Bothrops osbornei) juvenile, western slope of Andes, Ecuador
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Daniel Heuclin / Close-up of Brazilian Lancehead (Bothrops moojeni) showing the thermal sensing "pit" organ between the eye and mouth. Captive. Endemic to Brazil, Argentina and Paraguay.
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Daniel Heuclin / Brazilian Lancehead (Bothrops moojeni) coiled in fallen leaves. Captive. Endemic to Brazil, Paraguay and Argentina.
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Daniel Heuclin / Matto Grosso Lancehead (Bothrops neuwiedi bolivianus) coiled defensive strike-ready pose in fallen leaves. Captive. Endemic to Santa Cruz, Bolivia.
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Stephen Dalton / Common lancehead snake (Bothrops atrox) wrapped around branch, with tongue extended, controlled conditions
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Claudio Contreras / Fer de lance / Central american lancehead (Bothrops asper) in defense posture, Montes Azules Biosphere Reserve, Lacandon Rainforest, Mexico, September
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James Christensen / Fer-de-lance (Bothrops asper) juvenile coiled on forest floor, Colon, Panama
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James Christensen / Fer-de-lance (Bothrops asper) resting in limestone cave, Panama
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Martin van Lokven / Fer-de-lance (Bothrops asper), venomous, Laguna del Lagarto, Boca Tapada, Costa Rica
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Martin van Lokven / Fer-de-lance (Bothrops asper), venomous, Laguna del Lagarto, Boca Tapada, Costa Rica
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ZSSD / Brazilian Lancehead (Bothrops moojeni) snake showing eye and pit sensory organ, native to South America
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ZSSD / Brazilian Lancehead (Bothrops moojeni) snake showing nostril and pit sensory organ, native to South America
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Nick Garbutt / RF- Pope's pit tree viper (Trimeresurus popeorum) in lowland forest. Danum Valley, Sabah, Borneo, Malaysia. (This image may be licensed either as rights managed or royalty free.)
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James Christensen / Fer-de-lance (Bothrops asper) juvenile, venomous, Panama
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James Christensen / Fer-de-lance (Bothrops asper) juvenile, venomous, Panama
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James Christensen / Fer-de-lance (Bothrops asper) young, venomous, Panama
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James Christensen / Fer-de-lance (Bothrops asper) in defensive posture, venomous, Panama
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James Christensen / Fer-de-lance (Bothrops asper) in defensive posture, venomous, Panama
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James Christensen / Fer-de-lance (Bothrops asper) in defensive posture, venomous, Panama
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Tony Heald / RF- Pope's Pit Viper (Trimeresurus popeiorum / popeorum) Danum Valley, Sabah, Borneo, September. (This image may be licensed either as rights managed or royalty free.)
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Nick Gordon / Giant tarantula (Theraphosa leblondi) eating Fer de lance snake (Bothrops asper) Venezuela
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Nick Gordon / Fer de Lance / Lancehead snake {Bothrops asper} in rainforest, Amazonia, Brazil
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Doug Wechsler / Fer de lance snake on leaf litter {Bothrops asper} captive
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Pete Oxford / Fer de lance snake {Bothrops asper} Esmereldas, Ecuador
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TIM MARTIN / Central america lancehead snake / Fer de lance {Bothrops asper} Atlantic rainforest, Costa Rica
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Juergen Freund / Viper (Bothrops atrox). Gorgona Is, Colombia. snake
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Mark Moffett / Golden Lancehead (Bothrops insularis), University of Sao Paulo researcher Marcio Martins holds one snake while watching another, a deadly venomous snake living only on Queimada Grande Island, Atlantic...
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Flip de Nooyer / Hoatzin (Opisthocomus hoazin) nest with chicks approached by Green Tree Python (Morelia viridis), Guyana
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Michael & Patricia Fogden / Fer-de-lance (Bothrops asper) snake, swallowing Whiptail Lizard, rainforest, Costa Rica
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Mark Moffett / Jararaca (Bothrops jararaca) coiled in vegetation, most common viper in the Atlantic Forest, Brazil
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Michael & Patricia Fogden / Hog-nosed Pit Viper (Porthidium nasutus) swallowing a Rain Frog (Eleutherodactylus sp) note use of fangs to manipulate frog into mouth, rainforest, Costa Rica
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Michael & Patricia Fogden / Hog-nosed Pit Viper (Porthidium nasutus) swallowing a Rain Frog (Eleutherodactylus sp) note use of fangs to manipulate frog into mouth, rainforest, Costa Rica
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Michael & Patricia Fogden / Hog-nosed Pit Viper (Bothrops nasutus) predating Middleamerican Ameiva (Ameiva festiva) lizard note the use of fangs to manipulate prey into snake's mouth, rainforest, Costa Rica
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Michael & Patricia Fogden / Hog-nosed Pit Viper (Bothrops nasutus) female giving birth to live young, rainforest Costa Rica
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Michael & Patricia Fogden / Fer-de-lance (Bothrops asper) snake, hunting in the rainforest at night, Costa Rica
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Michael & Patricia Fogden / Two-striped Forest Pit Viper (Bothrops bilineatus) coiled on rainforest floor using tip of tail as lure, an example of caudal luring, Amazon, Peru
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Michael & Patricia Fogden / Hog-nosed Pit Viper (Bothrops nasutus) defensive throat display, rainforest, Costa Rica
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Pete Oxford / Brazilian Lancehead (Bothrops moojeni) venomous pit viper, coiled on the ground, Brazil
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Pete Oxford / Brazilian Lancehead (Bothrops moojeni) venomous pit viper, coiled on the ground, Brazil
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Michael & Patricia Fogden / Fer-de-lance (Bothrops asper) snake, juvenile swallowing Rain Frog (Eleutherodactylus sp) rainforest, Costa Rica
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Claus Meyer / Two-striped Forest Pit Viper (Bothrops bilineatus) coiled around plant, Atlantic Forest ecosystem, Brazil
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Claus Meyer / Two-striped Forest Pit Viper (Bothrops bilineatus) coiled around grasses, Atlantic Forest ecosystem, Brazil
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Claus Meyer / Fonseca's Pit Viper (Bothrops fonsecai) poisonous species, coiled on forest floor, Atlantic Forest ecosystem, Brazil
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Claus Meyer / Fonseca's Pit Viper (Bothrops fonsecai) coiled on forest floor, Atlantic Forest ecosystem, Brazil
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Michael & Patricia Fogden / Hog-nosed Pit Viper (Bothrops nasutus) venomous female with her three young on rainforest floor, Costa Rica
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Michael & Patricia Fogden / Fer-de-lance (Bothrops asper) snake, juvenile swallowing Rain Frog (Eleutherodactylus sp) in the rainforest, Costa Rica
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Michael & Patricia Fogden / Fer-de-lance (Bothrops asper) snake, juvenile swallowing Rain Frog (Eleutherodactylus sp) in the rainforest, Costa Rica
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Michael & Patricia Fogden / Fer-de-lance (Bothrops asper) snake, two meters long, venomous, coiled on rainforest floor, Costa Rica
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Michael & Patricia Fogden / Fer-de-lance (Bothrops asper) snake, venomous snake coiled on palm leaf in rainforest, Costa Rica
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Tui De Roy / Urutu (Bothrops alternatus) sun-basking in typical Cerrado habitat, Emas National Park, Brazil
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Tui De Roy / Urutu (Bothrops alternatus) sun-basking in typical Cerrado habitat, Emas National Park, Brazil
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Mike Beynon / Isla Quemade Grande, Snake Island, Brazil island with densest population of snakes on earth. All Golden lancehead snakes
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James Christensen / Osborne's Lancehead (Bothrops osbornei) juvenile, western slope of Andes, Ecuador
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Phil Savoie / Fer de lance snake / Central american lancehead {Bothrops asper} Costa Rica
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Mark Moffett / Cotiara (Bothrops cotiara) portrait on rock, Parana State, Atlantic Forest, Brazil
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Mark Moffett / Jararaca (Bothrops jararaca) climbing tree trunk, most common viper in the Atlantic Forest, Brazil
