IMAGE DISTRIBUTED FOR PURINA PRO PLAN - Kiera Hensley, 6, of Lakeland, Fla., and her 5-year-old Border Collie, Risky, compete in the Freestyle Flying Disc portion of the Purina Pro Plan Incredible Dog... more 
IMAGE DISTRIBUTED FOR PURINA PRO PLAN - Kiera Hensley, 6, of Lakeland, Fla., and her 5-year-old Border Collie, Risky, compete in the Freestyle Flying Disc portion of the Purina Pro Plan Incredible Dog Challenge on Saturday, May 4, 2013 at Spa Beach Park in St. Petersburg, Fla. (Brian Blanco/AP Images for Purina Pro Plan) less 
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Associated Press
Sat, May 4, 2013 5:33 PM EDT