Humans and great apes have shared similar laughter patterns for 15 million years: Chiara De Gregorio

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Picture this.

A researcher walks up to a gorilla… and starts tickling it.

For science.

Sounds ridiculous. Is ridiculous.

But what came out of those giggles might rewrite how we think about being human.


🦍 The tickle experiment that cracked open 15 million years

A team led by Chiara De Gregorio at the University of Warwick tickled 13 captive great apes — gorillas, orangutans, chimps, and bonobos.

Then they did the same with 4 young children playing at home.

They hit record. They studied the rhythm. They compared the beats.

And the result? Goosebumps.


🎵 Laughter, it turns out, has a beat

Human laughter isn't random noise.

It has timing. Spacing. A musical pulse between each "ha."

And guess what?

👉 Apes have the exact same rhythmic structure.

Not kinda similar. Not loosely related.

Structurally the same.

Which points to one wild conclusion:

We've all been laughing the same way since before we were us.

For 15 million years.


🧬 Why this is bigger than a giggle

Sounds don't fossilize.

You can't dig up an ancient laugh.

So for decades, scientists had no way to trace how human communication actually evolved.

This study just handed them a backdoor.

A few things that stand out:

  • 🐀 Rats squeak in ultrasonic when tickled — totally different machinery
  • 🐶 Dogs, horses, cats? Still a mystery worth recording
  • 👶 Human babies laugh on the same rhythmic grid as a baby bonobo
  • 🗣️ Humans just got faster and more variable — polite chuckle to belly laugh

As De Gregorio puts it — humans are the masters of laughter.

But we didn't invent the instrument.

We just learned to play it louder.


⚡ The takeaway

Next time you crack up with a friend…

you're not just laughing.

You're performing a sound your ancestors made before they walked upright.

Before language. Before fire. Before tools.

A bonobo in a forest and a toddler in a living room are running the same ancient software.

That's not just cute science.

That's a 15-million-year-old inheritance humming through every laugh you've ever shared.

Turns out the oldest language we have… isn't a language at all.

It's a giggle.

That's all for now!