Cuddly Cub Polar Bear Knut has died unexpectedly, at the age of four. The cause of death is unknown but speculation abounds.
In memoriam, please remain silent for a moment while we play the Knut Song:
Here is the last video of him, showing his death. This is a bit gruesome. Perhaps, if you know your comparative medicine, you can suggest a possible cause:
It is typical for captive polar bears to live much longer than four years old. The oldest ever in captivity may have been Debby who lived in a zoo in Winnipeg to the age of 42, although there are different opinions on that. More typical is about 15 years or a little longer.