In this image provided by Purina® Pro Plan®, athletic dogs compete in a variety of events at the Purina Pro Plan Incredible Dog Challenge® at Centennial Olympic Park in Atlanta on Saturday, April ... more 
In this image provided by Purina® Pro Plan®, athletic dogs compete in a variety of events at the Purina Pro Plan Incredible Dog Challenge® at Centennial Olympic Park in Atlanta on Saturday, April 5, 2014. (AP Images for Purina® Pro Plan®) less 
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Associated Press
Sat, Apr 5, 2014 11:09 PM EDT