What killed Knut? Riddle of beloved polar bear's death finally solved

Knut the polar bear dies alone in compound

The Voyages of Doctor Dolittle

What killed cute Knut? Scientists solve riddle four years after

Our Polar Flight Project Gutenberg

Polar Bear Star Knut's Keeper Found Dead – DW – 09/22/2008

Knut the polar bear death riddle solved by scientists

Death of Knut, the Polar Bear, Finally Explained

Scientists solve the mystery of Knut the polar bear's death

Zoo mourning loss of beloved polar bear just weeks before his 20th

Zoo mourning loss of beloved polar bear just weeks before his 20th

What killed Knut? Scientists solve riddle 4 years after polar bear

Zoo mourning loss of beloved polar bear just weeks before his 20th