Snake Hiss Sound: How does the snake make hissing sound?
Scientists have answered the question related to snake’s hiss. He has told that the snake emits hissing sound from the glottis which is connected to its respiratory system. Humans also have glottis, which is used for speaking. When snakes breathe, this glottis opens. The glottis is connected to the windpipe of the snake which connects directly to the lungs. Snakes have two lungs like humans, but only one works. The second lung is vestigial. That is, it is disappearing with time.
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