Story perspectives

Apes and Humans Share Ancient Rhythm in Laughter

6/30/2026

Summary

Apes Share Rhythm

University of Warwick researchers recorded 140 laughter sequences from 17 apes and 4 humans.
All five species—orangutans, gorillas, bonobos, chimpanzees and humans—produced evenly spaced, isochronous laughter intervals.
Tickle-induced laughter stayed highly regular while play laughter drifted from a strict beat.
The study, published June 25, 2026 in Communications Biology, says the shared rhythm dates to a common ancestor about 15 million years ago and suggests speech evolved gradually.

Summary

Apes Tickled

Researchers recorded tickling sessions in German and Malaysian zoos with four children and 13 captive apes.
They said tickling offers an unaltered view of each species’ laughing rhythm while warning larger samples are needed.
The paper noted that other mammals such as dogs produce play-related vocalizations, indicating a wider comparative framework.
Primatologist Chiara De Gregorio of Warwick said the findings are preliminary and may show subtler variations in larger studies.

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Apes Share Rhythm

University of Warwick researchers recorded 140 laughter sequences from 17 apes and 4 humans.
All five species—orangutans, gorillas, bonobos, chimpanzees and humans—produced evenly spaced, isochronous laughter intervals.
Tickle-induced laughter stayed highly regular while play laughter drifted from a strict beat.
The study, published June 25, 2026 in Communications Biology, says the shared rhythm dates to a common ancestor about 15 million years ago and suggests speech evolved gradually.

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