Keeper Who Raised Polar Bear Orphan Knut Found Dead

Berlin  - The zoo keeper who raised Germany's famous polar bear cub Knut by bottle was found dead Monday in his Berlin apartment.

A police spokesman Thomas Doerflein, 44, appeared to have died of natural causes.

There was no reason to suspect suicide or foul play, he said.

Dorflein raised Knut by bottle after the cub and his twin brotherwere rejected by their mother when they were just days old.

Knut weighed a tiny 810 grams at birth, and there were real fears he would die, as his brother did after just four days.