In the 1990s, the federal government reintroduced the gray wolf to Yellowstone National Park. It was considered a big success. And that’s when the real fight began.

More on the Story

The New Threat to Wolves in and Around Yellowstone The New York Times
DNA Study Reveals the One and Only Wolf Species in North America The New York Times
Gray Wolves Lose Another Fight in Washington Yahoo News
How the Fight for the Gray Wolf Was Won & Lost The Takeaway
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For Grey Wolves a Success Story Without Detractors The New York Times
The Wolf Recovery That Sent America Into An Uproar The Dodo
How success saving the gray wolf may backfire on environmentalists PRI The World
Wolves at the Door Outside Television