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"Summer means easy living for [black-tailed prairie dogs] at Devils Tower National Monument in Wyoming. Until the size of [these prairie dogs'] colony decreased naturally, park rangers used rifles and poison to thin its ranks."
—Text from "The Vanishing Prairie Dog," April 1998, National Geographic magazine
(Photographed on assignment for, but not published in, "The Vanishing Prairie Dog," April 1998, National Geographic magazine)
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