The classic frog makes a ribet or croaking sound, but this one sounds more like a siren!

Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word ... frogs, found across the rainforests of Madagascar, emit whistling sounds ...

The frowny-faced frog took a trio of scientists by surprise when they heard its chirping call in the rain-slicked slopes of ...

And female frogs are known to make softer and quieter sounds. That said, the females have also developed some interesting techniques to challenge the boys, so perhaps vocal adaptation may also be ...

Some frogs sounded like “regular whistles,” while others made “outlandish sounds.” A Boophis archeri, or Archer’s tree frog. Photo from Mark D. Sherz Intrigued, researchers began ...

If you think all frogs croak, you'd be wrong. Seven newly discovered species from the tree frog genus Boophis, found across the rainforests of Madagascar, emit special bird-like whistling sounds ...

Seven newly discovered species from the tree frog genus Boophis, found across the rainforests of Madagascar, emit special bird-like whistling sounds in their communication with other frogs.