Dean Richardson, chief surgeon at the University of Pennsylvania's New Bolton Center for Large Animals, walks Kentucky Derby winner Barbaro at the center in Kennett Square, Pa., in this Sept. 26, 2006 photo. Barbaro was euthanized Monday Jan. 29, 2007, after complications from his breakdown at last year's Preakness, ending an eight-month ordeal that prompted an outpouring of support across the country.
(Photo: AP Photo/George Widman)
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