Young sloths are quiet, slow-moving animals, so the idea of one screaming feels absurd, and that contrast is what made this recording travel. A short clip of a baby sloth letting out a startlingly loud, high-pitched cry circulated on video platforms, where the gap between the sleepy animal and the shriek turned it into reaction fodder. Since then it has lived on meme soundboards and short-form edits, usually played over moments of over-the-top shock. The appeal is simple: nobody expects a sloth to sound like that.