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...
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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...
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Gerrit Vyn / Western rattlesnake (Crotalus viridis oreganus) Grant County, Washington, USA, October.
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Gerrit Vyn / Western rattlesnake (Crotalus viridis oreganus) Grant County, Washington, USA, October.
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Gerrit Vyn / Juvenile Western rattlesnake (Crotalus viridis oreganus) Grant County, Washington. October.
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Chris Mattison / Northern Pacific Rattlesnake (Crotalus viridis oreganus) San Jose, California, USA, April.
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Lucas Bustamante / Southern Pacific rattlesnake (Crotalus helleri) portrait, Ramona, California, USA.
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Joel Sartore / Photo Ark / Northern Pacific rattlesnake (Crotalus oreganus) poised in a defensive position flicking its tongue,, American International Rattlesnake Museum. Captive.
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Joel Sartore / Photo Ark / Northern Pacific rattlesnake (Crotalus oreganus) poised, flicking its tongue, American International Rattlesnake Museum. Captive.
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Jeff Foott / Grand Canyon rattlesnake (Crotalus oreganus abyssus) feeding on Northern mocking bird (Mimus polyglottos). Havasu Canyon, Grand Canyon National Park, Arizona, USA. September.
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Jeff Foott / Grand Canyon rattlesnake (Crotalus oreganus abyssus) feeding on Northern mocking bird (Mimus polyglottos). Havasu Canyon, Grand Canyon National Park, Arizona, USA. September.
