This clip is a generic big cat roar rather than a line from a specific film or show, which is why it is tagged online for lions, tigers and leopards as well as for horror, monsters and jumpscares. Short animal roars like this have long been reused across gaming clips, reaction videos and meme edits because a single roar instantly reads as danger without needing any dialogue or context. Its zoo animal escaped association comes from that same shorthand, where the sound alone suggests a powerful creature breaking free and heading toward the camera.