Knut the polar bear celebrates his first birthday at Berlin's Zoologischer Garten zoo

FILES - Picture taken December 5, 2007 shows Knut the polar bear as he celebrates his first birthday at Berlin's Zoologischer Garten zoo. Berlin Zoo has agreed to pay 430,000 euros (600,000 dollars) to keep Knut, the polar bear who as a cub became a worldwide media sensation in 2007, press reports s