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Yellowstone National Park

A gray wolf in Yellowstone National Park.

Wolves to Lose Protection in Idaho and Montana

Since the first wolves were reintroduced in Yellowstone National Park in 1995, the population has grown to 1,500 or more

Jack rabbits like this one have mysteriously vanished from Yellowstone National Park a Wildlife Conservation Society study says.

Jackrabbits Vanish from Yellowstone

Since 1990, there’s only been one jackrabbit sighting in Yellowstone

Grizzly bear near Obsidian Creek in Yellowstone National Park

Yellowstone Bear Hair

Scientists collect hairs from Yellowstone grizzly bears to conduct genetic studies

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Yellowstone Grumbles

Pent-up water and steam threaten to burst through the park’s surface. (And we’re not talking Old Faithful here)

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Walking the Grizzlies’ Road, Yellowstone to the Yukon

Trekking 2,000 miles across rugged wilderness, biologist Karsten Heuer has braved bears and avalanches on behalf of a bold conservation initiative

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