Cheetahs Cannot Roar At All

When you picture a large feline predator (Review) on the savanna, a mighty roar is likely the first sound that comes to mind. For the cheetah, however, the reality is far more delicate. This slender cat communicates not with a roar, but with a surprising range of vocalizations that sound more like they belong to a bird or a house cat. They use high-pitched chirps to locate their young, hiss when threatened, and can produce a deep, rumbling purr to show contentment, a trait they share with much smaller felines.

This fundamental difference in sound production is rooted in the cheetah's anatomy. The ability to roar is exclusive to the big cats of the Panthera genus, such as lions, tigers, and leopards. These animals have a specialized larynx and a flexible hyoid bone in their throat, which allows their vocal cords to stretch and create a deep, powerful roar. The cheetah, by contrast (Review), has a solid, fixed hyoid bone structure. While this rigid anatomy makes roaring physically impossible, it is the perfect mechanism for creating the continuous vibrations of a purr, both while inhaling and exhaling. This key distinction places the cheetah in an interesting position as the world's largest purring cat.