biological sciences
Frog, out of the well
The frog, Odorrana tormota, is the only animal that can manipulate its hearing system to select particular frequencies. It helps the males to call and woo females. The system in frogs is also being used as a model for hearing aids. The rare amphibian may have evolved its hearing talent out of necessity, since its environment is so noisy, said researchers of University of Illinois at Urbana Champaign. Frogs sing like a bird or emit high ultrasonic sounds, the study said. The researchers added that the since the frog