Photo Gallery: Knut the Polar Bear Cub Ventures Outdoors 03/05/2007
 Hm, what's this? Little Knut still has a lot to learn about the world -- and...
REUTERS/Zoo Berlin

Hm, what's this? Little Knut still has a lot to learn about the world -- and about how to be a polar bear. The tiny cub has been raised by hand by his dedicated keeper Thomas Doerflein after Knut's mother, Tosca, rejected him.