Frogs that whistle “like sound effects from Star Trek” have been discovered by scientists. Most people would associate frogs with croaking, but the newly identified animals in Madagascar ...

Hikers in Papua New Guinea heard an “eep-eep-eep” sound and followed it to a yellow-spotted animal. Take a look.

Male frogs make a “distinct” sound and call “from leaves or grasses” in the evening. A breeding pair of Cannatella’s tree frogs were kept in captivity and laid a clutch “with 190 eggs ...

The team hoped to change that. During their hikes, researchers heard “harmonic notes sounding like ’eep-eep-eep’” and followed the sound to some frogs near a stream, the study said.