While it has its own sort of beauty, it could also easily be mistaken for a terrified human's screams. These animals are pretty solitary. They avoid other members of the species except during courtship and that is why these sounds have to be so strong and distinctive. If you're not a male mountain lion - well, we'll let you be the judge. Mountain lion sounds are varied and some others are that have been heard between males and females are: a low gargling growl, throaty yowls and squeaks. The whistle would seem to vary between pumas.
The squeaks and growls traveled about 50-100 metres while the yowls traveled 200 meters. While the sounds from a male mountain lion might seem devilish, it’s actually a mating call. The video below shows a female mountain lion in heat, and the sound is borderline unearthly. If you're a male mountain lion, this is the sweetest sound in the world: a female mountain lion calling for a mate.
It sounds like a woman in pain screaming, making it that much more horrific.