The Week in Animal News: The Wildest Stories of 2011, Polar Bears Turn to Cannibalism, and More

1 of 12
week animal news treehugger

credit: TreeHugger

1 of 12

As we near the end of 2011, we count down the year's craziest stories in the animal kingdom, from shocking mass deaths to the return of the wooly mammoth.

We also have a disturbing trend among polar bears, the mutating effects of nuclear power on insects, the lone wolf's return to California, and more in the Week in Animal News.