John Cancalosi / Timber rattlesnakes (Crotalus horridus) gravid females basking to bring young to term, Pennsylvania, USA.
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John Cancalosi / Timber rattlesnakes (Crotalus horridus) gravid females basking to bring young to term, Pennsylvania, USA.
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John Cancalosi / Timber rattlesnakes (Crotalus horridus) gravid females basking to bring young to term, Common gartersnake (Thamnophis sirtalis) also visible in the group. Pennsylvania, USA.