This Month in Photo of the Day: Animal Pictures

A young cheetah mother named Etta by researchers scans the Serengeti for signs of danger while her four 12-week-old cubs wrestle. A long-running study has found that the majority of cubs here are raised by a small group of cheetah supermoms.

See more pictures from the November 2012 feature story "Cheetahs on the Edge."

See pictures of big cat cubs »
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