"In this Nov. 29, 2012 photo, Johari, a three-and-half-year-old female cheetah, chases after a toy during a performance on the Cheetah Run at Safari Park, in Escondido, Calif.  Johari is at top speed when her ears disappear for optimum wind resistance. One of the most popular draws at Safari Park is the 100-meter cheetah run where the public gets to see firsthand the speed of ""nature's perfect sprinter.""  (AP Photo/Lenny Ignelzi)"
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