This prairie rattlesnake is poised to strike. Adult rattlesnakes, unlike juveniles, are able to regulate the amount of venom in their bites.
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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Rattlesnakes
See rattlesnake pictures in this photo gallery from National Geographic.