Animal Info -> Animals -> Roaring
The specially adapted larynx and hyoid apparatus gives the ability to roar. When the air passes to the lungs through larynx, the larynx cartilage walls Animals -> vibrate, producing sound. The larynx is longer for the lion which produces the most robust roar. The jaguars, leopards, lions and tigers have the physical structure of the throat needed for making the deep, loud and booming sound of a roar.