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Monaco, Monaco: Late Prince Rainier III's dog, Odin, follows the coffin carrying the body of the prince as they leave the Prince Palace, 15 April 2005 in Monaco, before the funeral mass at the 19th-century Cathedral, where Rainier will be laid to rest beside his beloved wife Grace. The prince who ruled the Mediterranean statelet since 1949, died at the age of 81 after a month-long hospitalization with severe breathing and heart problems, 06 April 2005 in the principality. AFP PHOTO POOL GERARD JULIEN (Photo credit should read GERARD JULIEN/AFP via Getty Images)

Monaco, Monaco:  Late Prince Rainier III's dog, Odin, follows the coffin carrying the body of the prince as they leave the Prince Palace, 15 April 2005 in Monaco, before the funeral mass at the 19th-century Cathedral, where Rainier will be laid to rest beside his beloved wife Grace. The prince who ruled the Mediterranean statelet since 1949, died at the age of 81 after a month-long hospitalization with severe breathing and heart problems, 06 April 2005 in the principality. AFP PHOTO POOL GERARD JULIEN  (Photo credit should read GERARD JULIEN/AFP via Getty Images)