Photo Gallery: The Sad Fairytale of Knut
03/21/2011
Knut in his heyday, shown here on March 23, 2007, the day he was presented to...
AP

Knut in his heyday, shown here on March 23, 2007, the day he was presented to the world's media. The bear died on Saturday afternoon in front of hundreds of shocked visitors, at the tender age of four years and three months.