Mountain lions, also called cougars or pumas, are large North American cats whose growls and roars are widely shared online as stock wildlife audio. This short clip circulates on soundboards as a generic big cat roar rather than a recording tied to a specific film, show or viral video. Creators reuse it because the sound is instantly recognisable and needs no context to suggest danger or wildness. Its brevity also suits short-form video, where a two-second animal roar can punctuate a reaction, a reveal or a dramatic cut without slowing the edit.