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BERLIN, GERMANY - APRIL 05: A dog sniffs near blossoming spring flowers in Tiergarten park on April 5, 2011 in Berlin, Germany. Spring weather has reached the German capital and the 23 degrees Celsius recorded in the city on April 3 made it the warmest April 3 in the city's history. (Photo by Sean Gallup/Getty Images)

BERLIN, GERMANY - APRIL 05:  A dog sniffs near blossoming spring flowers in Tiergarten park on April 5, 2011 in Berlin, Germany. Spring weather has reached the German capital and the 23 degrees Celsius recorded in the city on April 3 made it the warmest April 3 in the city's history.  (Photo by Sean Gallup/Getty Images)