One would be hard-pressed to take a walk outside without hearing the sounds of calling animals. During the day, birds chatter back and forth, and as night falls, frogs and insects call to defend ...

Researchers have discovered seven new species of tree frogs that make otherworldly calls in the rainforests of Madagascar. Their strange, high-pitched whistling calls sound more like sound effects ...

(PhysOrg.com) -- A study of the Central American red-eyed tree frog has found that the males shake the branches they’re perched on to produce strong vibrations to mark out their territory for mating. ...

This video shows a close-up view of a colorful red-eyed tree frog resting on a moss-covered branch in the tropical rainforest ...