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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.
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
Prairie Rattlesnake (Crotalus viridis viridis) in defensive posture, South Dakota
00558691
Ingo Arndt / Prairie Rattlesnake (Crotalus viridis viridis) in defensive posture, South Dakota
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
Male Western diamondback rattlesnake (Crotalus atrox) courting female, Sonoran Desert, Arizona, USA. Sequence 1/3.
01385960
John Cancalosi / Male Western diamondback rattlesnake (Crotalus atrox) courting female, Sonoran Desert, Arizona, USA. Sequence 1/3.
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.
Western diamondback rattlesnake (Crotalus atrox) Rio Grande Valley, Texas, USA, October. meetyourneighbours.net project
01376183
MYN / Seth Patterson / Western diamondback rattlesnake (Crotalus atrox) Rio Grande Valley, Texas, USA, October. meetyourneighbours.net project
South American rattlesnake (Crotalus durissus cumanensis) captive, from Venezuela and Colombia
01395863
Michael D. Kern / South American rattlesnake (Crotalus durissus cumanensis) captive, from Venezuela and Colombia
Western Diamondback rattlesnake (Crotalus atrox) coiled and with tail raised and rattling, found in South Western USA, captive
01362582
Daniel Heuclin / Western Diamondback rattlesnake (Crotalus atrox) coiled and with tail raised and rattling, found in South Western USA, captive
Eastern diamondback rattlesnake (Crotalus adamanteus) close up of rattle, The Orianne Indigo Snake Preserve, Telfair County, Georgia USA, captive
01365611
Pete Oxford / Eastern diamondback rattlesnake (Crotalus adamanteus) close up of rattle, The Orianne Indigo Snake Preserve, Telfair County, Georgia USA, captive
Western Diamondback Rattlesnake (Crotalus atrox), adult in defense posture. Sinton, Corpus Christi, Coastal Bend, Texas, USA, March.
01352578
B&S Draker / Western Diamondback Rattlesnake (Crotalus atrox), adult in defense posture. Sinton, Corpus Christi, Coastal Bend, Texas, USA, March.
Western Diamondback Rattlesnake (Crotalus atrox), adult in striking pose in wildflower field. Laredo, Webb County, South Texas, USA, April.
01350504
Rolf Nussbaumer / Western Diamondback Rattlesnake (Crotalus atrox), adult in striking pose in wildflower field. Laredo, Webb County, South Texas, USA, April.
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...
Western Diamondback Rattlesnake (Crotalus atrox), adult in striking pose in wildflower field. Laredo, Webb County, South Texas, USA, April.
01350502
Rolf Nussbaumer / Western Diamondback Rattlesnake (Crotalus atrox), adult in striking pose in wildflower field. Laredo, Webb County, South Texas, USA, April.
Eastern Diamondback Rattlesnake (Crotalus adamanteus), Little St. Simon's Island, Georgia
00455948
Pete Oxford / Eastern Diamondback Rattlesnake (Crotalus adamanteus), Little St. Simon's Island, Georgia
Striped western diamondback rattlesnake (Crotalus atrox) captive, from USA
01295721
Michael D. Kern / Striped western diamondback rattlesnake (Crotalus atrox) captive, from USA
Western Diamondback Rattlesnake (Crotalus atrox) flicking tongue in strike posture, in field of Showy Primrose, Fennessey Ranch, Refugio, Coastal Bend, Texas, USA
01294352
Rolf Nussbaumer / Western Diamondback Rattlesnake (Crotalus atrox) flicking tongue in strike posture, in field of Showy Primrose, Fennessey Ranch, Refugio, Coastal Bend, Texas, USA
Flower head of Rattlesnake flower (Brazoria truncata) Fennessey Ranch, Refugio, Coastal Bend, Texas Coast, USA
01294281
Rolf Nussbaumer / Flower head of Rattlesnake flower (Brazoria truncata) Fennessey Ranch, Refugio, Coastal Bend, Texas Coast, USA
Close up of Rattlesnake flower (Brazoria truncata)Fennessey Ranch, Refugio, Coastal Bend, Texas Coast, USA
01294280
Rolf Nussbaumer / Close up of Rattlesnake flower (Brazoria truncata)Fennessey Ranch, Refugio, Coastal Bend, Texas Coast, USA
Sonoran Desert Sidewinder (Crotalus cerastes) with forked tongue extended, Arizona USA
01286210
John Cancalosi / Sonoran Desert Sidewinder (Crotalus cerastes) with forked tongue extended, Arizona USA
Canebrake Rattlesnake {Crotalus horridus atricaudatus} captive;
01265217
Edwin Giesbers / Canebrake Rattlesnake {Crotalus horridus atricaudatus} captive;
Western diamondback rattlesnake {Crotalus atrox} skin detail, captive, from Texas, USA
01265213
Edwin Giesbers / Western diamondback rattlesnake {Crotalus atrox} skin detail, captive, from Texas, USA
Western diamondback rattlesnake {Crotalus atrox} captive, from Texas, USA
01265192
Edwin Giesbers / Western diamondback rattlesnake {Crotalus atrox} captive, from Texas, USA
Mexican West Coast Rattle Snake {Crotalus basiliscus} close up of rattle, captive, from Central America
01265168
Edwin Giesbers / Mexican West Coast Rattle Snake {Crotalus basiliscus} close up of rattle, captive, from Central America
Mojave Sidewinder rattlesnake with tongue flickering and rattle raised {Crotalus cerastes cerastes} captive from California, USA
01194434
Michael D. Kern / Mojave Sidewinder rattlesnake with tongue flickering and rattle raised {Crotalus cerastes cerastes} captive from California, USA
Close up of coiled Western Diamondback Rattlesnake {Crotalus atrox} Texas, USA, May
01187473
Rolf Nussbaumer / Close up of coiled Western Diamondback Rattlesnake {Crotalus atrox} Texas, USA, May
Harris' hawk (Parabuteo unicinctus) attacking a rattlesnake (composite image)
01142404
Kim Taylor / Harris' hawk (Parabuteo unicinctus) attacking a rattlesnake (composite image)
Western diamondback rattlesnake close up {Crotalus atrox} rattle visible, Texas,
01128624
John Cancalosi / Western diamondback rattlesnake close up {Crotalus atrox} rattle visible, Texas,
Colorado Desert Sidewinder (Crotalus cerastes laterorepens) on sand, venomous species native to deserts of California and Mexico
00117441
ZSSD / Colorado Desert Sidewinder (Crotalus cerastes laterorepens) on sand, venomous species native to deserts of California and Mexico
Black-tailed Rattlesnake (Crotalus molossus) portrait, Chiricahua Mountains, Arizona
00510419
Michael & Patricia Fogden / Black-tailed Rattlesnake (Crotalus molossus) portrait, Chiricahua Mountains, Arizona
Western Rattlesnake (Crotalus viridis) in defensive posture, South Dakota
00113430
Jim Brandenburg / Western Rattlesnake (Crotalus viridis) in defensive posture, South Dakota
Red Rattlesnake (Crotalus ruber) coiled on ground, Baja California, Mexico
00105463
Larry Minden / Red Rattlesnake (Crotalus ruber) coiled on ground, Baja California, Mexico
Red Rattlesnake (Crotalus ruber) with tongue extended, Baja California, Mexico
00105462
Larry Minden / Red Rattlesnake (Crotalus ruber) with tongue extended, Baja California, Mexico
Western Rattlesnake (Crotalus viridis) in defensive posture, South Dakota
00113409
Jim Brandenburg / Western Rattlesnake (Crotalus viridis) in defensive posture, South Dakota
Timber rattlesnakes emerging from den {Crotalus horridus} Pennsylvania, USA
01112625
John Cancalosi / Timber rattlesnakes emerging from den {Crotalus horridus} Pennsylvania, USA
Western diamondback rattlesnake (Crotalus atrox). Arizona, USA
01037199
John Cancalosi / Western diamondback rattlesnake (Crotalus atrox). Arizona, USA
Fangs of Eastern diamondback rattlesnake. Florida, USA {Crotalus adamanteus}
01066660
LYNN M. STONE / Fangs of Eastern diamondback rattlesnake. Florida, USA {Crotalus adamanteus}
Western diamondback rattlesnake {Crotalus atrox} in road at night. BBC Incredible Journeys. Road in the path of snake's migratory route across the Sonoran Desert, Arizona USA. Many killed on road.
01022308
Jason Venus / Western diamondback rattlesnake {Crotalus atrox} in road at night. BBC Incredible Journeys. Road in the path of snake's migratory route across the Sonoran Desert, Arizona USA. Many killed on road.
Sidewinder rattlesnake corkscrews along sand, wave of contact points passes along body (Resolution restriction - image digitised from film, 'Weird Nature' tv series)
01092547
Stephen Downer / John Downer P / Sidewinder rattlesnake corkscrews along sand, wave of contact points passes along body (Resolution restriction - image digitised from film, 'Weird Nature' tv series)
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.
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.
Eastern black-tailed rattlesnake (Crotalus ornatus). Indio Mountains, Texas, USA. May.
01630556
Daniel Heuclin / Eastern black-tailed rattlesnake (Crotalus ornatus). Indio Mountains, Texas, USA. May.
Eastern black-tailed rattlesnake (Crotalus ornatus) with tail held in air, amongst stones. Indio Mountains, Texas, USA. May.
01630555
Daniel Heuclin / Eastern black-tailed rattlesnake (Crotalus ornatus) with tail held in air, amongst stones. Indio Mountains, Texas, USA. May.
Black-tailed rattlesnake (Crotalus molossus). Chiricahua mountains, Arizona, USA. June.
01630554
Daniel Heuclin / Black-tailed rattlesnake (Crotalus molossus). Chiricahua mountains, Arizona, USA. June.
Black-tailed rattlesnake (Crotalus molossus). Chiricahua mountains, Arizona, USA. June.
01630553
Daniel Heuclin / Black-tailed rattlesnake (Crotalus molossus). Chiricahua mountains, Arizona, USA. June.
Black-tailed rattlesnake (Crotalus molossus) in forest. Chiricahua mountains, Arizona, USA. June.
01630552
Daniel Heuclin / Black-tailed rattlesnake (Crotalus molossus) in forest. Chiricahua mountains, Arizona, USA. June.
Black-tailed rattlesnake (Crotalus molossus) in forest. Chiricahua mountains, Arizona, USA. June.
01630551
Daniel Heuclin / Black-tailed rattlesnake (Crotalus molossus) in forest. Chiricahua mountains, Arizona, USA. June.
Black-tailed rattlesnake (Crotalus molossus). Chiricahua mountains, Arizona, USA. June.
01630550
Daniel Heuclin / Black-tailed rattlesnake (Crotalus molossus). Chiricahua mountains, Arizona, USA. June.
Black-tailed rattlesnake (Crotalus molossus) amongst rocks. Chiricahua mountains, Arizona, USA. June.
01630549
Daniel Heuclin / Black-tailed rattlesnake (Crotalus molossus) amongst rocks. Chiricahua mountains, Arizona, USA. June.
Black-tailed rattlesnake (Crotalus molossus) flicking tongue, Chiricahua mountains, Arizona, USA. June.
01630548
Daniel Heuclin / Black-tailed rattlesnake (Crotalus molossus) flicking tongue, 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) amongst rocks. Sonoran Desert, Arizona, USA. Controlled conditions.
01630544
Daniel Heuclin / Western diamondback rattlesnake (Crotalus atrox) amongst rocks. Sonoran Desert, 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.
Pacific Rattlesnake (Crotalus oreganus) in defensive posture, Carrizo Plain National Monument, California
00596250
Jeff Foott / Pacific Rattlesnake (Crotalus oreganus) in defensive posture, Carrizo Plain National Monument, California
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...
Western Rattlesnake (Crotalus viridis) flicking tongue, Montana
00590974
Donald M. Jones / Western Rattlesnake (Crotalus viridis) flicking tongue, Montana
Western Rattlesnake (Crotalus viridis) in defensive posture, North America
00590973
Donald M. Jones / Western Rattlesnake (Crotalus viridis) in defensive posture, North America
Greater Roadrunner (Geococcyx californianus) predating Western Diamondback Rattlesnake (Crotalus atrox) juvenile, Arizona
00584392
Alan Murphy/ BIA / Greater Roadrunner (Geococcyx californianus) predating Western Diamondback Rattlesnake (Crotalus atrox) juvenile, Arizona
Greater Roadrunner (Geococcyx californianus) predating Western Diamondback Rattlesnake (Crotalus atrox) juvenile, Arizona
00584391
Alan Murphy/ BIA / Greater Roadrunner (Geococcyx californianus) predating Western Diamondback Rattlesnake (Crotalus atrox) juvenile, Arizona
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
Timber rattlesnake  (Crotalus horridus) with babies aged  two days.  Rhode Island, USA. Photographed as part of a captive breeding and release programme, Roger Williams Park Zoo.
01590733
Paul Williams / Timber rattlesnake (Crotalus horridus) with babies aged two days. Rhode Island, USA. Photographed as part of a captive breeding and release programme, Roger Williams Park Zoo.
Timber rattlesnake  (Crotalus horridus) female close up of scales, Rhode Island, USA. Part of captive breeding and release programme, Roger Williams Park Zoo.
01590732
Paul Williams / Timber rattlesnake (Crotalus horridus) female close up of scales, Rhode Island, USA. Part of captive breeding and release programme, Roger Williams Park Zoo.
Timber rattlesnake (Crotalus horridus) with babies aged two days, part of a captive breeding and release programme, Roger Williams Park Zoo.
01590731
Paul Williams / Timber rattlesnake (Crotalus horridus) with babies aged two days, part of a captive breeding and release programme, Roger Williams Park Zoo.
Timber rattlesnake (Crotalus horridus) with babies aged two days, part of a captive breeding and release programme, Roger Williams Park Zoo.
01590730
Paul Williams / Timber rattlesnake (Crotalus horridus) with babies aged two days, part of a captive breeding and release programme, Roger Williams Park Zoo.
Timber rattlesnake (Crotalus horridus) with babies aged two days, part of a captive breeding and release programme, Roger Williams Park Zoo.
01590729
Paul Williams / Timber rattlesnake (Crotalus horridus) with babies aged two days, part of a captive breeding and release programme, Roger Williams Park Zoo.
Timber rattlesnake (Crotalus horridus) with babies aged two days, part of a captive breeding and release programme, Roger Williams Park Zoo.
01590728
Paul Williams / Timber rattlesnake (Crotalus horridus) with babies aged two days, part of a captive breeding and release programme, Roger Williams Park Zoo.
Prairie Rattlesnake (Crotalus viridis) sunbathing, Bozeman, Montana, USA.
01589596
Phil Savoie / Prairie Rattlesnake (Crotalus viridis) sunbathing, Bozeman, Montana, USA.
Greater Roadrunner (Geococcyx californianus) predating Western Diamondback Rattlesnake (Crotalus atrox) juvenile, Arizona
00576834
Alan Murphy/ BIA / Greater Roadrunner (Geococcyx californianus) predating Western Diamondback Rattlesnake (Crotalus atrox) juvenile, Arizona
Greater Roadrunner (Geococcyx californianus) predating Western Diamondback Rattlesnake (Crotalus atrox) juvenile, Arizona
00576833
Alan Murphy/ BIA / Greater Roadrunner (Geococcyx californianus) predating Western Diamondback Rattlesnake (Crotalus atrox) juvenile, Arizona
Prairie rattlesnake (Crotalus viridis viridis), threat display, South Dakota, USA September. Sequence 2 of 3
01542868
Ingo Arndt / Prairie rattlesnake (Crotalus viridis viridis), threat display, South Dakota, USA September. Sequence 2 of 3
Prairie rattlesnake (Crotalus viridis viridis), threat display, South Dakota, USA September. Sequence 3 of 3
01542867
Ingo Arndt / Prairie rattlesnake (Crotalus viridis viridis), threat display, South Dakota, USA September. Sequence 3 of 3
Prairie rattlesnake (Crotalus viridis viridis), threat display, South Dakota, USA September.
01542738
Ingo Arndt / Prairie rattlesnake (Crotalus viridis viridis), threat display, South Dakota, USA September.
Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
01508175
John Cancalosi / Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
01508174
John Cancalosi / Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
01508173
John Cancalosi / Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
01508172
John Cancalosi / Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
01508171
John Cancalosi / Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.