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A mother chases her 3-year-old son down a dirt road at a scout camp near Humbolt, Nebraska.

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A three-year-old runs down a dirt road at a scout camp near Humbolt, Nebraska.

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Gray wolves on Vargas Island have become habituated because of feeding by tourists. The wolves are not only a threat to humans, but are also putting themselves in danger of extermination by approaching humans. Here, naturalist Doug Chadwick tries to chase one away through intimidation.

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Wolves chasing elk in the wild in Yellowstone National Park.

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Wolves chasing elk in the wild in Yellowstone National Park.

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When wolves were re-introduced into Yellowstone National Park, elk knew exactly what to do when hunted — seek safety in numbers. Here the Druid Peak Pack chases elk.

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When wolves were re-introduced into Yellowstone National Park, elk knew exactly what to do when hunted — seek safety in numbers. (Druid Peak Pack)

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When wolves were re-introduced into Yellowstone National Park, elk knew exactly what to do when hunted — seek safety in numbers. (Druid Peak pack)

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When wolves were re-introduced into Yellowstone National Park, elk knew exactly what to do when hunted — seek safety in numbers. (Druid Peak Pack.)

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When wolves were re-introduced into Yellowstone National Park, elk knew exactly what to do when hunted — seek safety in numbers. (Shown here is a member of the Druid Peak pack hunting.)

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Cole and Ellen Sartore chase each other along the top of the Holmes Lake Dam.

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Grizzly bear in the wild in Yellowstone National Park.

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Grizzly bear chasing bison in the wild of Yellowstone National Park.

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Grizzly bear in the wild in Yellowstone National Park.

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Grizzly bear and bison in the wild of Yellowstone National Park.

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A grizzly chasing bison in the wild in Yellowstone National Park.

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A grizzly bear runs down a bison calf, pursued by its mother, in Yellowstone National Park. This behavior is rarely caught on film.

Photo: Julie Jensen Director of Marketing | WVC O: 866.800.7326 | D: 702.443.9249 | E: j.jensen@wvc.org

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