Four month-old Polar bear cub Flocke (snowflake) swims in the water on her first appearance to the public in her new outside enclosure in the Nuremberg zoo, April 9, 2008. Flocke was separated from her mother Vera after officials at the Nuremberg zoo became concerned she might harm the cub.(Xinhua/Reuters Photo)

Polar bear cub Flocke (snowflake) plays with a basketball during her first appearance for the public in her new outside enclosure in the Nuremberg zoo, April 9, 2008.(Xinhua/Reuters Photo) Four month-old polar bear cub Flocke (snowflake) leans on a branch on her first appearance to the public in her new outside enclosure in the Nuremberg zoo, April 9, 2008.(Xinhua/Reuters Photo)