Polar bear cub Knut plays in zoo

Updated: 2007-03-03 09:52

Polar bear cub Knut plays in the Berlin zoo in this undated picture, released on March 2, 2007. Knut, born on December 5, 2006, weighs now 6500 grammes and had to be hand fed every four hours by zoo employee Thomas Doerflein after its mother Tosca refused the baby. [Reuters]

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