Knut, the Globally-Loved Polar Bear Dies at Four

Knut, the world-famous polar bear, collapsed and died in front of 600 visitors at Berlin Zoo yesterday afternoon.
'He was by himself in his compound, he was in the water, and then he was dead,' said Mr Kloes. ' He was not sick, we don't know why he died."

This sucks.

Fans pay tribute...

UPDATE: Autopsy (necropsy) reveals brain anomalies tied to death.