One year old polar bear twins Nobby and Nela and their mother enjoy a birthday ice cake during the cubs' first birthday party at the polar bears' outdoor enclosure at the Hellabrunn zoo in Munich, southern Germany, on December 9, 2014. Polar bear twins Nobby and Nela were born at the zoo of Munich on December 9, 2013. (Photo by Christof Stache/AFP Photo)
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