How does the biological mechanism of the amphibian's purr contrast with feline purring?
Answer
The amphibian sound is a product of forced exhalation through the vocal cords
The amphibian purr results from forced exhalation across the vocal cords creating a vibration, whereas feline purring involves reciprocal airflow within the larynx during both inhalation and exhalation.
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Frogs laying frogspawn and purring! - YouTube
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