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MrPlow [soylentnews.org] writes:

Submitted via IRC for SirFinkus

Anthropologist Barbara J. King explores new research on wild apes who throw stones at trees and cache them to use again — a behavior not seen and documented before and that some say may be ritual.

http://www.nature.com/articles/srep22219

Source: http://www.npr.org/sections/13.7/2016/03/02/468875167/why-do-wild-chimpanzees-throw-stones-at-trees [npr.org]

Original Submission