Contributed by: filbert Friday, February 23 2007 @ 12:19 PM CST
Pruetz's study was funded by Iowa State University and the National Geographic Society.
Her Iowa State graduate students continue to observe other emerging patterns among chimpanzees in Senegal.
"In a million years I never would've predicted that I would've seen (hunting)," she said. "I'm going to plug along and see what unfolds."
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