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Kevin Messenger: Crotalus atrox (Western Diamondback Rattlesnake)
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Kevin Messenger: Sistrurus catenatus tergeminus
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Kevin Messenger: Sistrurus catenatus tergeminus
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Kevin Messenger: Western massasauga
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Kevin Messenger: western massasauga with prairie ringneck in stomach
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Kevin Messenger: Sistrurus catenatus tergeminus
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Kevin Messenger: Sistrurus catenatus tergeminus
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Kevin Messenger: Sistrurus catenatus tergeminus
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Kevin Messenger: Sistrurus catenatus tergeminus
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Kevin Messenger: Sistrurus catenatus tergeminus (Western Massasauga)
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Kevin Messenger: Sistrurus catenatus tergeminus
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Kevin Messenger: Western massasauga
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Kevin Messenger: Crotalus lepidus klauberi (Banded Rock Rattlesnake)
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Kevin Messenger: Crotalus lepidus klauberi (Banded Rock Rattlesnake)
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Kevin Messenger: banded rock rattlesnake (Crotalus lepidus klauberi)
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Kevin Messenger: Crotalus lepidus klauberi (Banded Rock Rattlesnake)
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Kevin Messenger: Crotalus atrox (Western Diamondback Rattlesnake)
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Kevin Messenger: Crotalus scutulatus (Mohave rattlesnake)
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Kevin Messenger: Crotalus scutulatus (Mohave rattlesnake)
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Kevin Messenger: Crotalus scutulatus (Mohave rattlesnake)
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Kevin Messenger: Crotalus scutulatus (Mohave rattlesnake)
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Kevin Messenger: Crotalus molossus (Northern Blacktail Rattlesnake)
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Kevin Messenger: Crotalus cerastes (sidewinder)
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Kevin Messenger: twin spotted rattlesnake
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Kevin Messenger: Crotalus pricei (Twin spot rattlesnake)
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Kevin Messenger: Mottled rock rattlesnake
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Kevin Messenger: Desert massasauga (Sistrurus catenatus edwardsi)
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Kevin Messenger: Trans-pecos copperhead
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Kevin Messenger: Broad-banded copperhead
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Kevin Messenger: osage copperhead