Published on February 23, 2017
Humans and chimpanzees are very close genetic relatives, but just how close we truly are is still something of a mystery.
New footage of West African chimpanzees shows them throwing rocks against trees for no observable reason, prompting scientists to wonder whether they are performing a kind of religious ritual.
“This [footage] represents the first record of repeated observations of individual chimpanzees exhibiting stone tool use for a purpose other than extractive foraging at what appear to be targeted trees,” the researchers wrote.
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