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This prairie rattlesnake is poised to strike. Adult rattlesnakes, unlike juveniles, are able to regulate the amount of venom in their bites.</p>
Coiled Prairie Rattlesnake
This prairie rattlesnake is poised to strike. Adult rattlesnakes, unlike juveniles, are able to regulate the amount of venom in their bites.
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- Photo Gallery
Rattlesnakes
See rattlesnake pictures in this photo gallery from National Geographic.