Updated: Feb 17, 2020
Pronghorn Antelope - Grand Teton National Park
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The pronghorn is the fastest animal in North America being clocked at speeds up to 65 mph. This is a mature buck sporting horns made of keratin. The pronghorn is the only horned ungulate in the Yellowstone Ecosystem that sheds its horns.
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The pronghorn is the fastest animal in North America being clocked at speeds up to 65 mph. This is a mature buck sporting horns made of keratin. The pronghorn is the only horned ungulate in the Yellowstone Ecosystem that sheds its horns.