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Amphibians hear very well. They can even hear the sounds which humans can not.

Where are their ears located?

Looking closely at a frog, one can spot behind the eyes, on the sides of the head, small circles covered with membrane. This membrane is the eardrum. People have it deep inside the acoustic duct; for most of amphibians, it is locate right outside. Sound waves spreading in air or in water cause it to vibrate; the membrane, in turn, transmits the signal through the auditory ossicle to the inner ear, where the auditory receptors are located. From the inner ear, neural impulses are transmitted to the brain where the auditory picture of the environment is formed.

However, not all amphibians have this kind of auditory system.

For instance, limbless amphibians tunneling in wet and warm soil of the tropics have "seismic" hearing and perceive vibration of the ground by the lower jaw; the sound is transmitted to the inner ear by the skull bones. It is the same with some tailed amphibians.

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10y ago

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