The clip comes from a live stream by Brazilian streamer Mellqui Costa, who roars in imitation of Diego, the saber-tooth tiger from the Ice Age films. The moment was clipped and shared as a reaction sound, spreading through TikTok and meme pages where the exaggerated animal noise became a shorthand for a wild or overconfident response. Its short length and instantly recognisable tiger impression make it easy to drop into edits, and it continues to circulate because it turns an ordinary reaction into something louder, sillier and more memorable.