A combination of pictures shows Berlin zoo employee Thomas Doerflein as polar bear cub Knut pulls out a bag with animal food out of his pocket during the bear's first presentation in Berlin zoo, in this March 23, 2007 file picture. 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]
