Berlin zoo employee Thomas Doerflein holds polar bear cub Knut in this undated picture, released on January 24, 2007. Thomas Doerflein, a good-natured man with a thick black beard, became an improbable sex symbol for his devoted care of Knut and won fame himself for his playful games with Knut before large crowds of adoring fans. Doerflein was reported dead on September 22, 2008, according to German police. [Agencies]
