** COMMERCIAL IMAGE ** In this photograph taken by AP Images for Purina® Dog Chow®, Lauren Doak with her black Labrador Retriever, Zeppy, crosses the finish line at the Purina® Dog Chow® Walk & ... more 
** COMMERCIAL IMAGE ** In this photograph taken by AP Images for Purina® Dog Chow®, Lauren Doak with her black Labrador Retriever, Zeppy, crosses the finish line at the Purina® Dog Chow® Walk & Wag event, a family fun walk at TC Jester Park on Saturday May 14, 2011 in Houston. The event benefited BARC, Houston's animal shelter, and local Post 560 of The American Legion, as part of the Purina® Dog Chow® "Dare Us Back" promotion. (Aaron M. Sprecher/AP Images for AP Images for Purina® Dog Chow®) less 
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Associated Press
Sat, May 14, 2011 3:16 PM EDT