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Old 10-30-03, 01:32 PM   #14 (permalink)
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Join Date: Jan-2003
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'Snakes can hear but this sense is not as well-developed as its other senses. Unlike lizards, snakes don't have external ears or even a middle ear. They only have a small bone (columella) which connects the jaw bone (quadrate bone--coloured orange in diagram) to the inner ear canals. These inner ear canals work superbly as the snake moves in three dimensions. A snake picks up sound through the skin which passes on to this jaw bone. Indications are that it is not true that a snake can only hear sounds when its head is on the ground. Snakes can hear airborne sounds, though probably not as acutely as some other animals. There are also indications that the lung may act as a sound receptor'.
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