She's outlasted two head coaches and hordes of players. She's seen bowl games and busted seasons. And now she's getting close to retirement. Ralphie IV, the University of Colorado's live buffalo mascot won't run with the football team this year (except for special appearances); she'll be replaced with the spryer Ralphie V, who was introduced last fall and is now in training says Ralphie program manager Gail Pederson. But Ralphie IV has carried the shaggy mantle of fame for a decade, and her graceful exit will allow the school to have two Ralphies for the first time, which will be easier on both and give college football's coolest mascot a chance to move on to greener gridirons.