Credited to Nelvana, the Canadian animation studio known for children's cartoons, this growl comes from the kind of exaggerated sound library used to make animated hunger instantly readable. File details also link it to a tummy-growling moment in The Backyardigans, which helps explain its clean, cartoonish tone. Once shared on soundboards, it spread as a quick meme and editing cue for hunger jokes, and it remains useful because it is short, instantly recognisable and easy to drop into almost any funny scene.