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Never Enough Polar Bears

• AP/Wilhelma Stuttgart
• AP/Wilhelma Stuttgart
• AP/Wilhelma Stuttgart
• AP/Wilhelma Stuttgart
• AP/Wilhelma Stuttgart
• AP/Wilhelma Stuttgart

• In this undated file picture, released by the Wilhelma Zoo in Stuttgart, Germany, Thursday, Feb. 28, 2008, the young polar bear cub Wilbaer, is seen in a basket. Wilbaer was born in the zoo on Dec. 10, 2007.
• In this undated file picture, released by the Wilhelma Zoo in Stuttgart, Germany, Thursday, Feb. 28, 2008, young polar bear cub Wilbaer, is seen in a basket. Wilbaer was born in the zoo on Dec. 10, 2007.
• In this undated file picture, released by the Wilhelma Zoo in Stuttgart, Germany, Thursday, Feb. 28, 2008, the young polar bear cub Wilbaer, is seen in a basket.
• In this undated file picture, released by the Wilhelma Zoo in Stuttgart, Germany, Thursday, Feb. 28, 2008, the young polar bear cub Wilbaer, is seen in his enclosure with his mother Corinna.
• Director of Wilhelma Zoo, Dieter Jauch, left, looks on at a a video made by the local television station SWR showing the polar bear cub Wilbaer and his mother Corinna during a press conference in Stuttgart, Germany, Thursday, Feb. 28, 2008.
• In this undated file picture, released by the Wilhelma Zoo in Stuttgart, Germany, Thursday, Feb. 28, 2008, young polar bear cub Wilbaer, is seen in a basket with keeper Juergen Deisenhofer.