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Prongh antelope1 run faster than any animal except the cheetah2, and they make the longest migration-up to 350 miles round-trip-of any land mammal in the US. Bu
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Prongh antelope1 run faster than any animal except the cheetah2, and they make the longest migration-up to 350 miles round-trip-of any land mammal in the US. But they cant outpace3 human development. For millennia, pronghs followed eight routes in Idaho4, Montana5, and Wyoming6 to their summer ranges in the Yellowstone and Teton highlands. Six of these routes are now blocked by roads, farms, reservoirs, and suburban sprawl.
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