National Geographic : 1939 Jul
) N national Exeograpnic society rloaacnrome oy vv enaei L~napman FLEETEST QUADRUPED IN NORTH AMERICA IS THE PRONGHORN, CLOCKED AT 60 MILES AN HOUR The cheetah, or hunting leopard of Asia and Africa, can exceed that record, but only for short spurts. So confident isthe antelope ofitssuperior speed that it invariably cuts across in front of pursuers, apparently to be tantalizing. One crossed the pathofMr. Chapman's automobile while the car was traveling 45 miles an hour. When a pronghorn is alarmed, the long white hairs of its rump patch rise on endtoform two large chrysanthemumlike rosettes.