So, here's a paper I never thought we'd write: "Use of a novel human object as a masturbatory tool by a wild male chimpanzee at Bulindi, Uganda"https://t.co/pWuxzpDE4i
— Bulindi Chimpanzees (@BulindiChimps) September 2, 2021
With fab illustrations by coauthor @KimvanDijk04 pic.twitter.com/n8fRw5ywhm