BERLIN - APRIL 03: Knut the polar bear cub plays in his pen at Berlin's Zoologischer Garten zoo on April 3, 2007 in Berlin, Germany. Knut, a four-month-old polar bear was born on December 5, 2006 but was rejected soon after birth by his mother. The cub has become a global sensation and even has his own video podcast with thousands of extra visitors flocking to Berlin Zoo to see him. Toy manufacturer Steiff has launched a Knut polar bear toy in his honour.