Few pop culture properties are as polarising as the Crazy Frog. Some found him so endearing. A little animated creature mimicking the sound of a motorcycle, hooning around to Harold Faltermeyer's ...

After trying everything from lullabies to white noise, Crazy Frog remains the only guaranteed fix. “As soon as Alexa says, ‘Playing Crazy Frog,’ he recognises it and goes silent,” Linsey said.

Consequently, many people think it’s the only sound that frogs make. In reality, of the more than 7,000 frog species throughout the world, only a small handful croak “ribbit.” Some frog ...