Best of 2011

Biggest Animal Headlines of the Year

From Knut's death to the Bronx Zoo cobra, animal news went wild this year


When an Austrian pharmaceutical company changed ownership this year, a group of chimpanzees that had been used for medical research for 30 years was released. They had never before seen the outdoors, and for the first time, they felt sun on their faces, put their toes in the grass and grinned from ear to ear.