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This is Scientific American's 60-second science. I'm Christopher in Taliatta.

In the frog world, romance is often accompanied by a song.

It's the norm. The vast majority of frogs have males calling to attract females.

Sandra Gute is an evolutionary biologist and herpetologist at the University of Kampinas in Brazil,

and she studies frogs called pumpkin toadlets from the cloud forests of coastal Brazil.

They are extremely cool.

They're teeny tiny.

They're neon orange and they wave their arms around when they feel threatened.

By either a predator or herpetologist.

And true to frog form.

They make this little call that sounds like a cricket, like...

But here's the weird part.

It appears the pumpkin toadlets are not able to hear the sounds they make.

Goot and her colleagues played recordings of the calls to the frogs to look for reactions.

The researchers also traced electrical impulses from the frog's ears to their brains

and even dissected the frog's inner ear.

And it turns out, the frogs just don't have the equipment to hear their own voices.

...