Research overview: vocal fold structure and the low pitch of the lion roar

A lion roar is astonishingly loud and low, and this overview reviews the vocal-fold anatomy behind it. Studies of big cat larynges found unusually large, robust vocal folds with a thick layer of fat and connective tissue that lets them vibrate at low frequencies under high airflow, producing the deep, far-carrying roar with less effort than expected. This soft-tissue specialisation, alongside the flexible hyoid, underlies roaring. Researchers study the larynx through dissection, tissue mechanics, and acoustic analysis. Why it matters: the lion roar is a long-range territorial and social signal, and understanding its production shows how soft-tissue design, not just gross anatomy, generates an iconic sound. It also refines the old hyoid-centred story, highlighting the vocal folds as the immediate source of the great cats characteristic deep voice.