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Sumatran pit viper (Trimeresurus sumatranus) juvenile on tree trunk, in tropical rainforest. Danum Valley, Sabah, Borneo, Malaysia.
01634538
Nick Garbutt / Sumatran pit viper (Trimeresurus sumatranus) juvenile on tree trunk, in tropical rainforest. Danum Valley, Sabah, Borneo, Malaysia.
Two male Southern Pacific rattlesnakes (Crotalus oreganus helleri) fighting during mating season. This behaviour is known as a "combat dance", and is used to determine dominance and the right to mate...
01625450
John Chan / Two male Southern Pacific rattlesnakes (Crotalus oreganus helleri) fighting during mating season. This behaviour is known as a "combat dance", and is used to determine dominance and the right to mate...
Western rattlesnake (Crotalus viridis viridis), threat display, South Dakota, USA, September.
01512025
Silke Arndt / Western rattlesnake (Crotalus viridis viridis), threat display, South Dakota, USA, September.
Western diamondback rattlesnake (Crotalus atrox), defensive rattling, Arizona, USA, April.
01508236
John Cancalosi / Western diamondback rattlesnake (Crotalus atrox), defensive rattling, Arizona, USA, April.
Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
01508163
John Cancalosi / Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
Female Timber rattlesnake (Crotalus horridus) at nest site with newborn young, Pennsylvania, USA, September.
01495666
John Cancalosi / Female Timber rattlesnake (Crotalus horridus) at nest site with newborn young, Pennsylvania, USA, September.
Sunda island pitviper (Trimeresurus insularis) in tree, Komodo Island.
01555328
Daniel Heuclin / Sunda island pitviper (Trimeresurus insularis) in tree, Komodo Island.
Western diamond-backed rattlesnake (Crotalus atrox) Texas, USA, April.
01531775
Bence Mate / Western diamond-backed rattlesnake (Crotalus atrox) Texas, USA, April.
Prairie rattlesnake (Crotalus viridis viridis), threat display, South Dakota, USA September. Sequence 1 of 3
01542870
Ingo Arndt / Prairie rattlesnake (Crotalus viridis viridis), threat display, South Dakota, USA September. Sequence 1 of 3
Western diamondback rattlesnake (Crotalus atrox) tasting air, in habitat, Arizona, USA, October. Controlled conditions
01508335
Daniel Heuclin / Western diamondback rattlesnake (Crotalus atrox) tasting air, in habitat, Arizona, USA, October. Controlled conditions
Sidewinder (Crotalus cerstastes) in sand dunes, Anza-Borrego Desert State Park, California, USA, May.
01490546
Chris Mattison / Sidewinder (Crotalus cerstastes) in sand dunes, Anza-Borrego Desert State Park, California, USA, May.
Mojave rattlesnake (Crotalus scutulatus) Mojave desert, California, June.
01448577
Daniel Heuclin / Mojave rattlesnake (Crotalus scutulatus) Mojave desert, California, June.
Sri Lankan Bamboo Pitviper (Trimeresurus trigonocephalus) captive, from Sri Lanka
01395844
Michael D. Kern / Sri Lankan Bamboo Pitviper (Trimeresurus trigonocephalus) captive, from Sri Lanka
Bamboo pitviper, (Viridovipera stejnegeri) captive from Asia
01395933
Michael D. Kern / Bamboo pitviper, (Viridovipera stejnegeri) captive from Asia
Pope's pitviper (Trimeresurus / Popeia popeorum)captive, from SE Asia
01362623
Daniel Heuclin / Pope's pitviper (Trimeresurus / Popeia popeorum)captive, from SE Asia
RF- Western Diamondback Rattlesnake (Crotalus atrox), adult in striking pose with rattle raised, in wildflowers. Laredo, Webb County, South Texas, USA. April. (This image may be licensed either as rig...
01350505
Rolf Nussbaumer / RF- Western Diamondback Rattlesnake (Crotalus atrox), adult in striking pose with rattle raised, in wildflowers. Laredo, Webb County, South Texas, USA. April. (This image may be licensed either as rig...
Ventral view of Wagler's / Temple Pitviper (Tropidolaemus wagleri). Controlled conditions. Mindanao, Philippines, February.
01340034
Daniel Heuclin / Ventral view of Wagler's / Temple Pitviper (Tropidolaemus wagleri). Controlled conditions. Mindanao, Philippines, February.
Wagler's / Temple Pitviper (Tropidolaemus wagleri) climbing among branches. Controlled conditions. Mindanao, Philippines, February.
01340032
Daniel Heuclin / Wagler's / Temple Pitviper (Tropidolaemus wagleri) climbing among branches. Controlled conditions. Mindanao, Philippines, February.
Portrait of Wagler's / Temple Pitviper (Tropidolaemus wagleri) showing the thermo-receptive pit organ between the eye and mouth. Controlled conditions. Mindanao, Philippines, February.
01340031
Daniel Heuclin / Portrait of Wagler's / Temple Pitviper (Tropidolaemus wagleri) showing the thermo-receptive pit organ between the eye and mouth. Controlled conditions. Mindanao, Philippines, February.
Portrait of Wagler's / Temple Pitviper (Tropidolaemus wagleri) showing the thermo-receptive pit organ between the eye and mouth. Controlled conditions. Mindanao, Philippines, February.
01340029
Daniel Heuclin / Portrait of Wagler's / Temple Pitviper (Tropidolaemus wagleri) showing the thermo-receptive pit organ between the eye and mouth. Controlled conditions. Mindanao, Philippines, February.
Wagler's / Temple pit viper (Tropidolaemus wagleri) in lowland rainforest, Gunung Palung National Park, Borneo, West Kalimantan, Indonesia
01302522
Tim Laman / Wagler's / Temple pit viper (Tropidolaemus wagleri) in lowland rainforest, Gunung Palung National Park, Borneo, West Kalimantan, Indonesia
Temple / Wagler's Pit Viper [Tropidolaemus wagleri] Bako National Park, Sarawak, Borneo. September
01214401
Tony Heald / Temple / Wagler's Pit Viper [Tropidolaemus wagleri] Bako National Park, Sarawak, Borneo. September
Wagler's / Temple pitviper (Tropidolaemus wagleri) on leaf, in defensive / strike posture, Danum Valley, Sabah, Borneo
01174953
Nick Garbutt / Wagler's / Temple pitviper (Tropidolaemus wagleri) on leaf, in defensive / strike posture, Danum Valley, Sabah, Borneo
Eyelash viper {Bothrops schlegeli} on Heliconia,  Esmeraldas, Ecuador
01090701
Pete Oxford / Eyelash viper {Bothrops schlegeli} on Heliconia, Esmeraldas, Ecuador
Eyelash viper coiled {Bothrops schlegeli} captive
01123348
LYNN M. STONE / Eyelash viper coiled {Bothrops schlegeli} captive
Eyelash viper {Bothrops schlegeli} on Heliconia Esmeraldas, Ecuador
01090702
Pete Oxford / Eyelash viper {Bothrops schlegeli} on Heliconia Esmeraldas, Ecuador
Slow motion clip of a Fer de Lance (Bothrops atrox) smelling with its tongue, Orellana Province, Ecuador.
01631726
Morley Read / Slow motion clip of a Fer de Lance (Bothrops atrox) smelling with its tongue, Orellana Province, Ecuador.
Fer de Lance (Bothrops atrox) on the rainforest floor, Orellana Province, Ecuador.
01631725
Morley Read / Fer de Lance (Bothrops atrox) on the rainforest floor, Orellana Province, Ecuador.
Timber rattlesnake (Crotalus horridus) females coiled up in leaf litter, newborn young sheltering under rock. At maternity site, Pennsylvania, USA. August.
01633587
John Cancalosi / Timber rattlesnake (Crotalus horridus) females coiled up in leaf litter, newborn young sheltering under rock. At maternity site, Pennsylvania, USA. August.
Timber rattlesnake (Crotalus horridus) females in undergrowth at maternity site, Pennsylvania, USA. August.
01633586
John Cancalosi / Timber rattlesnake (Crotalus horridus) females in undergrowth at maternity site, Pennsylvania, USA. August.
Timber rattlesnake (Crotalus horridus) females and newborn young at maternity site. Pennsylvania, USA. August.
01633584
John Cancalosi / Timber rattlesnake (Crotalus horridus) females and newborn young at maternity site. Pennsylvania, USA. August.
Panamint rattlesnake (Crotalus stephensi) with tongue out and rattle raised, on rock. Amargosa Desert, Nye County, Nevada. May.
01633204
Daniel Heuclin / Panamint rattlesnake (Crotalus stephensi) with tongue out and rattle raised, on rock. Amargosa Desert, Nye County, Nevada. May.
Panamint rattlesnake (Crotalus stephensi) on rock, Amargosa Desert, Nye County, Nevada. May.
01633203
Daniel Heuclin / Panamint rattlesnake (Crotalus stephensi) on rock, Amargosa Desert, Nye County, Nevada. May.
Panamint rattlesnake (Crotalus stephensi) on rock, tongue out and rattle raised. Amargosa Desert, Nye County, Nevada. May.
01633202
Daniel Heuclin / Panamint rattlesnake (Crotalus stephensi) on rock, tongue out and rattle raised. Amargosa Desert, Nye County, Nevada. May.
Sumatran pit viper (Trimeresurus sumatranus) juvenile on trunk. Danum Valley, Sabah, Borneo, Malaysia. Focus stacked image.
01634541
Nick Garbutt / Sumatran pit viper (Trimeresurus sumatranus) juvenile on trunk. Danum Valley, Sabah, Borneo, Malaysia. Focus stacked image.
Western diamondback rattlesnake (Crotalus atrox) portrait, coiled up in evening light. Texas, USA. June.
01633494
Karine Aigner / Western diamondback rattlesnake (Crotalus atrox) portrait, coiled up in evening light. Texas, USA. June.
Western diamondback rattlesnake (Crotalus atrox). Texas, USA. June.
01633493
Karine Aigner / Western diamondback rattlesnake (Crotalus atrox). Texas, USA. June.
Western diamondback rattlesnake (Crotalus atrox) crossing a track, Texas, USA. June.
01633492
Karine Aigner / Western diamondback rattlesnake (Crotalus atrox) crossing a track, Texas, USA. June.
Western diamondback rattlesnake (Crotalus atrox) tail rattle. Texas, USA. May.
01633488
Karine Aigner / Western diamondback rattlesnake (Crotalus atrox) tail rattle. Texas, USA. May.
Western diamondback rattlesnake (Crotalus atrox) coiled up at base of Prickly pear cactus (Opuntia sp). Texas, USA. April.
01633462
Karine Aigner / Western diamondback rattlesnake (Crotalus atrox) coiled up at base of Prickly pear cactus (Opuntia sp). Texas, USA. April.
Western diamondback rattlesnake (Crotalus atrox) coiled up. Texas, USA. April.
01633454
Karine Aigner / Western diamondback rattlesnake (Crotalus atrox) coiled up. Texas, USA. April.
Researcher from Indio Mountain Research Station capturing Eastern black-tailed rattlesnake (Crotalus ornatus) Chihuahuan Desert,Texas, USA. May 2019.
01630557
Daniel Heuclin / Researcher from Indio Mountain Research Station capturing Eastern black-tailed rattlesnake (Crotalus ornatus) Chihuahuan Desert,Texas, USA. May 2019.
Black-tailed rattlesnake (Crotalus molossus). Chiricahua mountains, Arizona, USA. June.
01630550
Daniel Heuclin / Black-tailed rattlesnake (Crotalus molossus). Chiricahua mountains, Arizona, USA. June.
Western diamondback rattlesnake (Crotalus atrox) flicking tongue and with rattle raised. Arizona, USA. Controlled conditions.
01630547
Daniel Heuclin / Western diamondback rattlesnake (Crotalus atrox) flicking tongue and with rattle raised. Arizona, USA. Controlled conditions.
Western diamondback rattlesnake (Crotalus atrox) camouflaged amongst rocks, with rattle raised. Sonoran Desert, Arizona, USA. Controlled conditions. June 2019.
01630546
Daniel Heuclin / Western diamondback rattlesnake (Crotalus atrox) camouflaged amongst rocks, with rattle raised. Sonoran Desert, Arizona, USA. Controlled conditions. June 2019.
Western diamondback rattlesnake (Crotalus atrox) with rattle raised, Arizona, USA. Controlled conditions.
01630545
Daniel Heuclin / Western diamondback rattlesnake (Crotalus atrox) with rattle raised, Arizona, USA. Controlled conditions.
Western diamondback rattlesnake (Crotalus atrox), flicking tongue and with rattle raised, Arizona, USA. Controlled conditions.
01630543
Daniel Heuclin / Western diamondback rattlesnake (Crotalus atrox), flicking tongue and with rattle raised, Arizona, USA. Controlled conditions.
Bornean keeled pit viper (Tropidolaemus subannulatus) in the Sabangau (peat-swamp) Forest, Central Kalimantan, Indonesia.
01630895
Duncan Murrell / Bornean keeled pit viper (Tropidolaemus subannulatus) in the Sabangau (peat-swamp) Forest, Central Kalimantan, Indonesia.
Sri Lankan green pit viper (Trimeresurus trigonocephalus). Laxapana Falls, Sri lanka.
01630868
Duncan Murrell / Sri Lankan green pit viper (Trimeresurus trigonocephalus). Laxapana Falls, Sri lanka.
Sri Lankan Green Pit Viper (Trimeresurus trigonocephalus). Laxapana Falls, Sri lanka.
01630867
Duncan Murrell / Sri Lankan Green Pit Viper (Trimeresurus trigonocephalus). Laxapana Falls, Sri lanka.
Bornean keeled pit viper (Tropidolaemus subannulatus) in the Sabangau (peat-swamp) Forest, Central Kalimantan, Indonesia.
01630835
Duncan Murrell / Bornean keeled pit viper (Tropidolaemus subannulatus) in the Sabangau (peat-swamp) Forest, Central Kalimantan, Indonesia.
Bornean keeled pit viper (Tropidolaemus subannulatus) juvenile in the Sabangau (peat-swamp) Forest, Central Kalimantan, Indonesia.
01630834
Duncan Murrell / Bornean keeled pit viper (Tropidolaemus subannulatus) juvenile in the Sabangau (peat-swamp) Forest, Central Kalimantan, Indonesia.
Vogel's pit viper (Trimeresurus vogeli) male in elevated rainforest habitat within the Bach Ma National Park in central Vietnam. Dry season.
01622159
Robert Valentic / Vogel's pit viper (Trimeresurus vogeli) male in elevated rainforest habitat within the Bach Ma National Park in central Vietnam. Dry season.
Sri Lankan Pit Viper (Trimeresurus trigonocephalus) Sinharaja, Southern Province, Sri Lanka
01627555
Lucas Bustamante / Sri Lankan Pit Viper (Trimeresurus trigonocephalus) Sinharaja, Southern Province, Sri Lanka
Two male Southern Pacific rattlesnakes (Crotalus oreganus helleri) fighting during mating season. This behaviour is known as a "combat dance", and is used to determine dominance and the right to mate...
01625449
John Chan / Two male Southern Pacific rattlesnakes (Crotalus oreganus helleri) fighting during mating season. This behaviour is known as a "combat dance", and is used to determine dominance and the right to mate...
Hog-nosed pit viper (Porthidium nasutum)  Atlantic Lowland Rainforest, Costa Rica.
01617338
Melvin Grey / Hog-nosed pit viper (Porthidium nasutum) Atlantic Lowland Rainforest, Costa Rica.
Hognosed pitviper (Porthidium nasutum). Costa Rica.
01616721
Paul Hobson / Hognosed pitviper (Porthidium nasutum). Costa Rica.
Fer-de-lance (Bothrops asper) snake resting on wood on forest floor. Costa Rica.
01616671
Paul Hobson / Fer-de-lance (Bothrops asper) snake resting on wood on forest floor. Costa Rica.
Temple pitviper (Tropidolaemus subannulatus) portrait. Captive occurs in Philippines, Indonesia and Sulawesi.
01607366
Daniel Heuclin / Temple pitviper (Tropidolaemus subannulatus) portrait. Captive occurs in Philippines, Indonesia and Sulawesi.
Temple pitviper (Tropidolaemus subannulatus) portrait. Captive occurs in Philippines, Indonesia and Sulawesi.
01607365
Daniel Heuclin / Temple pitviper (Tropidolaemus subannulatus) portrait. Captive occurs in Philippines, Indonesia and Sulawesi.
Temple pitviper (Tropidolaemus subannulatus) portrait. Captive occurs in Philippines, Indonesia and Sulawesi.
01607364
Daniel Heuclin / Temple pitviper (Tropidolaemus subannulatus) portrait. Captive occurs in Philippines, Indonesia and Sulawesi.
White-lipped pit viper (Trimeresurus albolabris) Lantau Island, Hong Kong, China
01608540
Magnus Lundgren / Wild Wonders of China / White-lipped pit viper (Trimeresurus albolabris) Lantau Island, Hong Kong, China
White-lipped pit viper (Trimeresurus albolabris) Lantau Island, Hong Kong, China
01608539
Magnus Lundgren / Wild Wonders of China / White-lipped pit viper (Trimeresurus albolabris) Lantau Island, Hong Kong, China
Yunnan bamboo pitviper (Trimeresurus stejnegerii yunnanensis) hanging from branch. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.
01608063
Magnus Lundgren / Wild Wonders of China / Yunnan bamboo pitviper (Trimeresurus stejnegerii yunnanensis) hanging from branch. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.
Yunnan bamboo pitviper (Trimeresurus stejnegerii yunnanensis) hanging from branch. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.
01608062
Magnus Lundgren / Wild Wonders of China / Yunnan bamboo pitviper (Trimeresurus stejnegerii yunnanensis) hanging from branch. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.
Yunnan bamboo pitviper (Trimeresurus stejnegerii yunnanensis) camouflaged amongst leaves. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.
01608061
Magnus Lundgren / Wild Wonders of China / Yunnan bamboo pitviper (Trimeresurus stejnegerii yunnanensis) camouflaged amongst leaves. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.
Yunnan bamboo pitviper (Trimeresurus stejnegerii yunnanensis) camouflaged amongst leaves. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.
01608060
Magnus Lundgren / Wild Wonders of China / Yunnan bamboo pitviper (Trimeresurus stejnegerii yunnanensis) camouflaged amongst leaves. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.
Yunnan bamboo pitviper (Trimeresurus stejnegerii yunnanensis) camouflaged amongst leaves. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.
01608059
Magnus Lundgren / Wild Wonders of China / Yunnan bamboo pitviper (Trimeresurus stejnegerii yunnanensis) camouflaged amongst leaves. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.
Temple pitviper (Tropidolaemus subannulatus) Controlled conditions , occurs in Philippines and Indonesia.
01604245
Daniel Heuclin / Temple pitviper (Tropidolaemus subannulatus) Controlled conditions , occurs in Philippines and Indonesia.
Temple pitviper (Tropidolaemus subannulatus) Controlled conditions , occurs in Philippines and Indonesia.
01604244
Daniel Heuclin / Temple pitviper (Tropidolaemus subannulatus) Controlled conditions , occurs in Philippines and Indonesia.
Temple pitviper (Tropidolaemus subannulatus) Controlled conditions , occurs in Philippines and Indonesia.
01604243
Daniel Heuclin / Temple pitviper (Tropidolaemus subannulatus) Controlled conditions , occurs in Philippines and Indonesia.
Temple pitviper (Tropidolaemus subannulatus) Controlled conditions , occurs in Philippines and Indonesia.
01604247
Daniel Heuclin / Temple pitviper (Tropidolaemus subannulatus) Controlled conditions , occurs in Philippines and Indonesia.
Temple pitviper (Tropidolaemus subannulatus) Controlled conditions , occurs in Philippines and Indonesia.
01604246
Daniel Heuclin / Temple pitviper (Tropidolaemus subannulatus) Controlled conditions , occurs in Philippines and Indonesia.
Fer-de-lance (Bothrops lanceolatus) on white background, captive, endemic to Martinique.
01602131
Daniel Heuclin / Fer-de-lance (Bothrops lanceolatus) on white background, captive, endemic to Martinique.
Fer-de-lance (Bothrops lanceolatus) captive, endemic to Martinique.
01602130
Daniel Heuclin / Fer-de-lance (Bothrops lanceolatus) captive, endemic to Martinique.
Fer-de-lance (Bothrops lanceolatus) captive, endemic to Martinique.
01602129
Daniel Heuclin / Fer-de-lance (Bothrops lanceolatus) captive, endemic to Martinique.
Fer-de-lance (Bothrops lanceolatus) captive, endemic to Martinique.
01602128
Daniel Heuclin / Fer-de-lance (Bothrops lanceolatus) captive, endemic to Martinique.
Fer-de-lance (Bothrops lanceolatus) captive, endemic to Martinique.
01602125
Daniel Heuclin / Fer-de-lance (Bothrops lanceolatus) captive, endemic to Martinique.
Fer-de-lance (Bothrops lanceolatus) captive, endemic to Martinique.
01602124
Daniel Heuclin / Fer-de-lance (Bothrops lanceolatus) captive, endemic to Martinique.
Fer-de-lance (Bothrops lanceolatus) captive, endemic to Martinique.
01602123
Daniel Heuclin / Fer-de-lance (Bothrops lanceolatus) captive, endemic to Martinique.
Timber rattlesnakes (Crotalus horridus), gravid females basking to bring young to term, Pennsylvania
01597203
John Cancalosi / Timber rattlesnakes (Crotalus horridus), gravid females basking to bring young to term, Pennsylvania
Fer-de-lance (Bothrops asper) hatchling on a blade of grass in a swamp, La Selva Biological Station, Costa Rica.
01593292
Jen Guyton / Fer-de-lance (Bothrops asper) hatchling on a blade of grass in a swamp, La Selva Biological Station, Costa Rica.
Fer-de-lance (Bothrops asper) hatchling on a blade of grass in a swamp, La Selva Biological Station, Costa Rica
01593264
Jen Guyton / Fer-de-lance (Bothrops asper) hatchling on a blade of grass in a swamp, La Selva Biological Station, Costa Rica
Ecuadorian toadheaded viper (Bothrops campbelli) portrait, Mindo, Pichincha, Ecuador.
01592497
Lucas Bustamante / Ecuadorian toadheaded viper (Bothrops campbelli) portrait, Mindo, Pichincha, Ecuador.
Ecuadorian toadheaded viper (Bothrops campbelli) curled up, Mindo, Pichincha, Ecuador.
01592473
Lucas Bustamante / Ecuadorian toadheaded viper (Bothrops campbelli) curled up, Mindo, Pichincha, Ecuador.
Green jararaca / Two striped forest pit viper (Bothriopsis bilineata) on branch, Tambopata, Madre de Dios, Peru.
01592469
Lucas Bustamante / Green jararaca / Two striped forest pit viper (Bothriopsis bilineata) on branch, Tambopata, Madre de Dios, Peru.
Osborne's lancehead (Bothrops osbornei) juvenile curled up, Mashpi, Pichincha, Ecuador.
01592466
Lucas Bustamante / Osborne's lancehead (Bothrops osbornei) juvenile curled up, Mashpi, Pichincha, Ecuador.
Spotted lancehead (Bothrops punctatus) with tongue extended curled round branch, Canande, Esmeraldas, Ecuador.
01592552
Lucas Bustamante / Spotted lancehead (Bothrops punctatus) with tongue extended curled round branch, Canande, Esmeraldas, Ecuador.
Eyelash palm pitviper (Bothriechis schlegelii) curled round plant, Canande, Esmeraldas, Ecuador.
01592550
Lucas Bustamante / Eyelash palm pitviper (Bothriechis schlegelii) curled round plant, Canande, Esmeraldas, Ecuador.
Eyelash palm pitviper (Bothriechis schlegelii) curled round berries on twig, Canande, Esmeraldas, Ecuador.
01592545
Lucas Bustamante / Eyelash palm pitviper (Bothriechis schlegelii) curled round berries on twig, Canande, Esmeraldas, Ecuador.
Juvenile Spotted lancehead (Bothrops punctatus) curled up on branch, Rio Silanche, Pichincha, Ecuador.
01592604
Lucas Bustamante / Juvenile Spotted lancehead (Bothrops punctatus) curled up on branch, Rio Silanche, Pichincha, Ecuador.
Andean forest pit viper (Bothriopsis pulchra) curled up on fern, Sumaco, Napo, Ecuador.
01592593
Lucas Bustamante / Andean forest pit viper (Bothriopsis pulchra) curled up on fern, Sumaco, Napo, Ecuador.
Speckled forest pit viper (Bothriopsis taeniata) on heliconia, Yasuni National Park, Orellana, Ecuador.
01592588
Lucas Bustamante / Speckled forest pit viper (Bothriopsis taeniata) on heliconia, Yasuni National Park, Orellana, Ecuador.
Ecuadorian toadhead (Bothrocophias campbelli) with Mosquito (Culicidae) feeding on its head, Mindo, Pichincha, Ecuador.
01592620
Lucas Bustamante / Ecuadorian toadhead (Bothrocophias campbelli) with Mosquito (Culicidae) feeding on its head, Mindo, Pichincha, Ecuador.
Two striped forest pitviper (Bothriopsis bilineata) curled up on log, Yasuni National Park, Orellana, Ecuador.
01592627
Lucas Bustamante / Two striped forest pitviper (Bothriopsis bilineata) curled up on log, Yasuni National Park, Orellana, Ecuador.
Common lancehead (Bothrops atrox) curled up, Yasuni National Park, Orellana, Ecuador.
01592641
Lucas Bustamante / Common lancehead (Bothrops atrox) curled up, Yasuni National Park, Orellana, Ecuador.