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: ...

Chris Kehrer, science program manager at Port Royal Sound Foundation in South Carolina, recently answered a question I have wondered about since childhood. Why does the Atlantic croaker, a marine fish ...

Male frogs often force females to mate with them, but in one species, a croak from the female seems to persuade males to leave her alone. The sound may be an “honest” signal that she isn’t fertile and ...