ASCOT, UNITED KINGDOM - MAY 13: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge walk their dog Lupo after Prince William and Prince Harry played in the the Audi Polo Challenge charity polo match at Coworth Park Polo Club on May 13, 2012 in Ascot, England. (Photo by Indigo/Getty Images)
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