Cheetahs Cannot Roar At All

The powerful vocalizations we associate with big cats are not universal. In fact, the world's fastest land animal communicates not with a mighty roar, but with a surprising range of chirps, hisses, and purrs. This fundamental difference places the cheetah in a separate evolutionary branch from its roaring cousins. The feline family is largely divided between the "roaring cats" of the Panthera genus (lions, tigers, leopards, jaguars) and the "purring cats," a group that includes everything from the common house cat to the cheetah itself.

The specific ability to roar or purr comes down to the anatomy of the throat, particularly a structure called the hyoid apparatus. In lions and tigers, this structure is incomplete and flexible, made partially of cartilage. This allows their larynx, or voice box, to be more mobile and produce the deep, resonant vibrations of a roar. The cheetah, however, possesses a solid, bony hyoid structure. While this rigid anatomy makes roaring impossible, it is the very thing that enables the continuous, vibrating purr on both the inhale and exhale—a comforting sound it shares with much smaller felines.

This anatomical trade-off means that no cat can both roar and purr in the true sense. The cheetah’s bird-like chirps are used for a variety of social reasons, from a mother calling her cubs to individuals greeting one another. As a result, this impressive predator (Review) holds a unique title: it is the largest and most powerful member of the cat family that can genuinely purr.