Michael & Patricia Fogden / Timber Rattlesnake (Crotalus horridus) coiled on ground among leaf litter, Appalachian Mountains, Pennsylvania
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Michael & Patricia Fogden / Timber Rattlesnake (Crotalus horridus) venomous snake camouflaged in leaf-litter in the Appalachian Mountains, Pennsylvania
John Cancalosi / Timber rattlesnake (Crotalus horridus) gravid female, and Northern copperhead (Agkistrodon contortrix) resting amongst lichen covered rocks, Maryland, USA. August.
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Joel Sartore / Photo Ark / Close up of a Timber rattlesnake's (Crotalus horridus) tail. It is vibrating its tail as a threat display. Verve Biotech, Waverly, Nebraska. Captive.