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A grizzly bear waves at Madrid's zoo on July 7, 2010 on a hot summer day. AFP PHOTO/DANI POZO (Photo credit should read DANI POZO/AFP via Getty Images)

A grizzly bear waves at Madrid's zoo on July 7, 2010 on a hot summer day. AFP PHOTO/DANI POZO (Photo credit should read DANI POZO/AFP via Getty Images)