Best of 2011

Biggest Animal Headlines of the Year

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

COLORADO CAT WILLOW

How does a cat get from Colorado to New York and end up back in her original owners' arms five years later? The answer's still not clear. But once Willow was reunited with her family, she became a celebrated kitty, going on to appear on the Today show and meet Anderson Cooper.