Look at this crazy animal...
The pronghorn (Antilocapra americana) is a unique, deer-sized mammal native to the open prairies, grasslands, and deserts of western and central North America.
While colloquially called the "American antelope," it is not actually a true antelope. It is the sole surviving member of the ancient family Antilocapridae, making its closest living relatives giraffes and okapis.
The pronghorn is famous for several evolutionary traits, Incredible Speed and Endurance. It is the fastest land mammal in North America and the second-fastest in the world, hitting top speeds of 55 to 60 mph. Unlike cheetahs, which tire quickly, pronghorns can maintain a steady cruise of 30 to 40 mph for miles thanks to oversized hearts, large windpipes, and highly efficient lungs