Although Cougar is one the biggest feline species, it cannot roar

Most large cats, including tigers and lions, with whom you may be familiar have a different larynx than do cougars. Because the bone known as the solid hyoid is located beneath the tongue of cougars, who can't roar. The animal's vocalizations are aided by the solid hyoid, which is connected to the larynx and windpipe. Large animals have flexible cartilage that can vibrate in that mouth region rather than rigid hyoids, which allows lions and other big cats to roar. But cougars are unable to roar like the lion due to their sturdy hyoid. However, they do communicate in a variety of other ways as well. As a result, they use a variety of vocalizations to communicate, including meow, hissing, snarling, screeching, and even purring.

Cougars are little cats with solid hyoids, thus they are unable to roar, but so scary to a heart-pounding fear when females can outscream. Hikers stop in place when they hear the cougar scream, a rare, high-pitched sound that blasts through the forest air and causes hikers to freeze in place. These cougar sounds are types of long-distance communication, much like the wolf's howl. The shrieking cry is only made by females, and it coincides with their bodies' preparation for mating. That scream would be referred to be a booty call in human lingo.