Chimpanzees were better than bonobos at an ape intelligence test that requires spitting water into a tube to make a peanut float upwards until it comes into reach. https://link.springer.com/article/10.1007/s10071-019-01275-0#Sec2 …pic.twitter.com/eUHf86FWlm
4:57 AM - 5 Jul 2019
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