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MASTER OF ROUND PRAIRIE

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Bison are truly the tough guys of the Greater Yellowstone Ecosystem. Their warm coats insulate them during Yellowstone's frigid winters where temperatures can dip below minus 40 degrees Fahrenheit. Their coats have ten times as many hairs per square inch as domestic cattle, making them well suited to this harsh environment.
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Sandy Sisti
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Bison
Bison are truly the tough guys of the Greater Yellowstone Ecosystem. Their warm coats insulate them during Yellowstone's frigid winters where temperatures can dip below minus 40 degrees Fahrenheit. Their coats have ten times as many hairs per square inch as domestic cattle, making them well suited to this harsh environment.