What apes can tell us about the origins of teasing

We all know people who find it hilarious to prod and poke, pinch
and tickle, all in the name of fun. But are humans the only ones
who like to tease each other? Or are other animals in on the act?
Ian Sample talks to Prof Erica Cartmill about her work on apes and
teasing and asks, given how annoying teasing is, why do apes, and
humans, do it?. Help support our independent journalism at
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