Snoopy is the beagle from Peanuts, created by Charles M. Schulz in 1950, and later voiced through expressive noises in animated specials and films rather than full speech. Short clips of his reactions have circulated widely on soundboards and social media, where a simple bleh can stand in for disgust without any context. Editors often pair it with an awkward moment or a disappointing reveal, which helps explain why this tiny cartoon noise has stayed useful long after the original animations first aired.