Daniel Heuclin / Western diamondback rattlesnake (Crotalus atrox) tasting air, in habitat, Arizona, USA, October. Controlled conditions
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Juergen Freund / Researcher Guido Westhoff looking at a cross section of pit organ tissue from a Coastal carpet python (Morelia spilota mcdowelli) through an electron microscope with 20,000 x magnification. Pit organs...
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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.
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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.
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Daniel Heuclin / Black-tailed rattlesnake (Crotalus molossus) tasting the air, Arizona, USA, September. Controlled conditions
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Daniel Heuclin / Black-tailed rattlesnake (Crotalus molossus) tasting the air, Arizona, USA, September. Controlled conditions.
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Daniel Heuclin / Southwestern speckled rattlesnake (Crotalus mitchellii pyrrhus) tasting air, California, USA, October.
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Daniel Heuclin / Southwestern speckled rattlesnake (Crotalus mitchellii pyrrhus) coiled tasting the air, California, USA, October.
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Daniel Heuclin / Arizona black rattlesnake (Crotalus cerberus) tasting air and rattling tail, Arizona, USA, September. Controlled conditions.
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Daniel Heuclin / Arizona black rattlesnake (Crotalus cerberus) tasting air and rattling tail, Arizona, USA, September. Controlled conditions.
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Lynn M Stone / Western Diamondback Rattlesnake (Crotalus atrox) on rock with tongue extended, Phoenix, Arizona, USA. Non exclusive.
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James Christensen / Ecuadorian Toad-headed Pit-viper (Bothrocophias campbelli) eye and pit sensory organ, Mindo, western slope of Andes, Ecuador
