We are the masters of laughter, I would say.
Across 15 million years and the boundaries between species, laughter has endured as one of life's oldest shared languages. A primatologist at the University of Warwick, comparing archival recordings of tickled apes with the fresh giggles of children, has found that the rhythmic architecture of laughter is nearly identical across humans, gorillas, orangutans, chimpanzees, and bonobos — pointing to a common ancestor and a common joy. What humans have done, it seems, is not invent laughter but inherit it, then elaborate it into something richer and more socially nuanced than any other species has managed. In the sound of a child's giggle, we hear an echo older than our own kind.
- Scientists can't dig up ancient laughter — sound leaves no fossil — yet a team has reconstructed its deep history by comparing decades-old ape recordings with newly captured children's giggles.
- The rhythmic timing between laugh bursts looks nearly identical across four great ape species and human children, a structural kinship that shouldn't exist unless it was inherited from a shared ancestor.
- Human laughter has since accelerated and complexified, branching into polite chuckles, nervous titters, and full-bodied guffaws — a social toolkit no other primate has developed to the same degree.
- Researchers outside the study are already pointing forward: examining laughter-like vocalizations in dogs, horses, and cats could map how communication systems diverge as species adapt to their own social worlds.
- The finding reframes something ordinary — a laugh — as one of the oldest continuous behaviors in primate life, a signal of play and safety that has outlasted every language, culture, and civilization built on top of it.
A primatologist at the University of Warwick has uncovered something quietly astonishing: humans and great apes have been laughing in fundamentally the same way for at least 15 million years. Chiara De Gregorio led a team that examined decades-old recordings of 13 captive apes — gorillas, orangutans, chimpanzees, and bonobos — and compared their acoustic patterns with freshly recorded laughter from young children being tickled at home. The rhythmic structure that emerged was nearly identical across species: the timing between bursts, the regularity of the sound, all pointing to a shared evolutionary origin.
Published in Communications Biology, the findings suggest that laughter is not something humans invented but something we inherited and refined. Over millions of years, human laughter has grown faster and more socially layered — modulated by context, ranging from a restrained professional chuckle to a full-throated laugh among close friends. De Gregorio described humans as "the masters of laughter," a species that took an ancient primate signal and elaborated it into something far more nuanced than any other animal has managed.
Animal communication researcher Brittany Florkiewicz, who was not involved in the study, noted that the findings open a broader research agenda: examining laughter-like vocalizations in dogs, horses, and cats could reveal how communication systems evolve as species adapt to their own social worlds. Because sound leaves no fossil record, scientists must work backward from living animals and old recordings — assembling, one chuckle at a time, a history of how we became ourselves.
A primatologist in England has found something that might make you smile: humans and great apes have been laughing in fundamentally the same way for at least 15 million years. The discovery came from an unlikely source—old tape recordings of tickled apes, paired with fresh audio of children giggling at home.
Chiara De Gregorio, who works at the University of Warwick, led a team that examined decades-old recordings of 13 captive apes: gorillas, orangutans, chimpanzees, and bonobos. They compared the acoustic patterns in those recordings with newly captured laughter from four young children being tickled and playing. What emerged was striking: the rhythmic structure of laughter—the timing between individual laughs, the regularity of the bursts—looked nearly identical across species. This similarity, the researchers argue, points to a shared ancestor, a common thread running back through millions of years of primate evolution.
"In a way, we are very similar to other great apes because we've been laughing in a similar way for 15 million years," De Gregorio said in a statement about the findings, published this week in Communications Biology. The observation is simple but profound: laughter is not something humans invented. It is something we inherited, refined, and made our own.
Laughter itself is not rare in the animal kingdom. Many creatures produce sounds in response to play or pleasure. But the patterns differ wildly. When researchers tickle rats, for instance, the animals respond with ultrasonic squeaks—sounds far outside human hearing range. The laughter of great apes, by contrast, follows a rhythm that our ears recognize immediately as kin to our own. Over evolutionary time, human laughter has accelerated and grown more intricate. We now modulate our giggles depending on context: a restrained chuckle in a professional setting, a full-throated laugh with people we trust. De Gregorio described humans as "the masters of laughter," a species that took an ancient signal and elaborated it into something far more nuanced.
The study raises questions that scientists are only beginning to explore. Brittany Florkiewicz, an animal communication researcher at Lyon College who was not involved in the work, said the findings make intuitive sense and point toward a larger research agenda. She suggested that examining laughter-like vocalizations in other playful animals—dogs, horses, cats—could illuminate how communication systems evolve and diverge. Each species, she implied, has adapted its signals to fit its own social world.
This line of inquiry may seem whimsical, but it touches something fundamental about human nature. Laughter is a window into how we learned to communicate, how we bonded with one another, how we signaled safety and play without words. Because sounds do not fossilize, scientists cannot dig up ancient laughter. Instead, they work backward from what remains: the giggles of living apes, the recordings of children, the patterns that persist across millions of years. One chuckle at a time, they are assembling a history of how we became ourselves.
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In a way, we are very similar to other great apes because we've been laughing in a similar way for 15 million years.— Chiara De Gregorio, primatologist at the University of Warwick
A Conversa do Hearth Outra perspectiva sobre a história
Why does it matter that apes and humans laugh the same way? Isn't laughter just laughter?
It matters because laughter is a window into our evolutionary past. We can't dig up ancient sounds, so when we find a pattern that's been preserved for 15 million years, it tells us something about what our common ancestor was doing, what mattered to them socially.
But humans laugh in so many different ways—a nervous laugh, a polite laugh, a real laugh. How is that the same as an ape's giggle?
The underlying rhythm is the same. The timing between bursts, the regularity of it. But you're right that humans have layered complexity on top. We've taken that ancient signal and made it context-dependent, more sophisticated. We're not just laughing; we're communicating nuance.
So what does this tell us about why we laugh in the first place?
It suggests laughter evolved as a signal of play and safety—something that said "this is okay, we're not in danger." In apes, it's still mostly that. In us, it became a tool for managing social relationships, for signaling belonging or distance.
If we've been laughing the same way for 15 million years, why do we need to study it more?
Because we still don't fully understand how laughter evolved or what role it played in the development of language and complex communication. And there are other animals—dogs, horses—that seem to have playful vocalizations too. Comparing them might show us whether this pattern is unique to primates or something deeper.