Knut's

Berlin Mayor Klaus Wowereit called Knut's death "awful."

Berlin zoo: Beloved polar bear Knut has died 2011

Berlin Mayor Klaus Wowereit called Knut's death "awful."

Berlin zoo: Beloved polar bear Knut has died 2011

Berlin Mayor Klaus Wowereit called Knut's death "awful," telling the B.Z. daily, "we all held him so dear."

NPR Topics: News 2011

If you think Knut's passing is sad, just wait until all polar bears are gone.

Heather Taylor-Miesle: Newt on Knut Heather Taylor-Miesle 2011

Johannes Eisele/AFP/Getty Images Children stand in front of polar bear Knut's enclosure at the Berlin zoo on March 21.

Berlin's Famous Bear 2011

Between 600 and 700 people were at Knut's compound and saw the four-year-old bear die, German news agency DAPD reported.

Berlin zoo: Beloved polar bear Knut has died 2011

Between 600 and 700 people were at Knut's compound and saw the four-year-old bear die, German news agency DAPD reported.

Berlin zoo: Beloved polar bear Knut has died 2011

If you think Knut's passing is sad, just wait until all polar bears are gone.

Heather Taylor-Miesle: Newt on Knut Heather Taylor-Miesle 2011

The Los Angeles Times put together this photo gallery of Knut's too-short life.

Knut the polar bear may be stuffed, displayed in Berlin museum 2011

Knut, the 4-year-old polar bear who died suddenly two weeks ago at Berlin's zoo, drowned after the swelling of his brain caused him to collapse into his enclosed pool, according to experts who have studied Knut's necropsy report.

Necropsy shows Knut, the polar bear, drowned after collapsing 2011