Frogs can communicate via sonar. ___ Editors summary and abstract follow: _____ Editor's Summary 16 March 2006 Raising The Tone -------------------------------------------------------------------------------- Some bats, dolphins and rodents are notable among vertebrates in being able to produce and detect ultrasonic frequencies. Now for the first time an amphibian can be added to that select list. The spectacular bird-like sounds made by a type of Chinese torrent frog were known to edge into the ultrasonic range: now these frogs are shown to use ultrasonics as a form of communication. The males do at least, during competition for territory. Frogs are a long way,...