Knut 'Doesn't Know He's a Polar Bear'

Poor Knut: The celebrity polar bear, no longer the ball of fluff who captivated animal lovers around the world, is miserable without human contact and doesn't realize he isn't a person. "Knut must go. As soon as possible," a keeper at the Berlin Zoo said of the 300-pound 15-month-old, Der Spiegel reports.

"As long as he's with us, he will always regard Thomas Dörflein as his father," the keeper said of Knut's onetime primary caregiver, who's no longer permitted interaction with his former playmate. What's more, "Knut needs an audience," the keeper said, and cries if he doesn't see the familiar crowds of visitors in front of his cage. (More Knut stories.)