ナショナルジオグラフィックのインスタグラム(natgeo) - 3月7日 05時52分

iPhone photo by David Guttenfelder @dguttenfelder. A hound used to track mountain lions inside Yellowstone National Park peeks out from his transport cover where he has a bed on the back of a pickup truck. Following an eight-year gap in research on cougars, biologists with Yellowstone Cougar Project @yellowstone_cougar_project have restarted in the winter of 2014 to monitor the dynamics and ecological influence of Yellowstone’s big cat, and the effects of predator diversity.

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