<p><br> 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.

Photograph by Chris Johns

Rattlesnakes

See rattlesnake pictures in this photo gallery from National Geographic.

Published November 18, 2009

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