Exclusive: NFL stars Chris Johnson and Devin Hester kick off Nat Geo Wild's Big Cat Week

By Tony Maglio LOS ANGELES (TheWrap.com) - Speedy NFL stars Chris Johnson and Devin Hester - and one big game cat - are going to run like their species depends on it to kick-off Nat Geo Wild's Big Cat Week. Betty White will also be joining the team in a different special, the network told TheWrap exclusively. The aforementioned experiment of speed and agility will be the subject of the Big Cat Week kickoff special, "Man vs. Cheetah," which airs this November on Nat Geo Wild. This is the network's fourth annual Big Cat Week, its highest-rated week. ...



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