Nature Cat leads his friends to the pond for a day of listening to one of the most amazing spring sounds: the bullfrog croak! At the pond, amid the bullfrog croaks, the gang hears another sound: ...

A woman holds a bullfrog in her hands. She pets its head and it croaks every single time. When it croaks, it sounds like it says Mom. The woman filming does not want the frog getting near her because ...

BULLFROGS know a familiar voice when they hear it. When defending their territory, North American male bullfrogs listen for subtle differences in the croaks of other males to sort out the newcomers ...

Male bullfrogs communicate with other bullfrogs through calls made up of a series of croaks, some of which contain stutters, according to a new Brown University study which describes a pattern not ...