Groups of chimpanzees in West Africa use stone tools in distinctly different ways to crack open nuts. Researchers used 3D scans to trace wear patterns on the tools, called “hammerstones” and “anvils.” ...
Researchers describe for the first time the scavenging behavior of mangabey monkeys, guinea fowls, and squirrels on energy-rich nut remnants cracked by chimpanzees and red river hogs. The team used ...
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