A popular theory suggests wolves domesticated themselves for human food scraps—and new simulations suggests it's paw-sible.
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Hosted on MSNReintroducing wolves to Yellowstone helped entire ecosystem thrive, 20-year study findsA new study calculates the long-term effects of reintroducing wolves to Yellowstone National Park in the 1990s, which ultimately helped willow trees that feed wildlife in stream habitats.
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