The audio is taken from Pluto's Kid Brother, a Disney Pluto cartoon released on April 12, 1946. In the short, Pluto is frustrated by his smaller younger brother, whose energetic barking and complaining yelps provide much of the comedy without any dialogue. Because the performance is pure cartoon animal sound, editors later lifted it as a clean, reusable puppy effect. It remains popular online for pet edits and retro animation posts, since the old Disney sound work still reads clearly even in short modern clips.
About this sound
Puppy barking then yelping sound effect from the 1946 Pluto cartoon Pluto's Kid Brother, used for cute dog moments, pet videos and funny animal fails.
This clip starts with a small puppy barking in short, high pitched bursts that sound excited and attention seeking. The barks are quick and a little clumsy, like a very young dog trying to sound bigger than it is. After a few seconds the tone shifts into sharp yelps, as if the puppy has been startled or told off. The contrast between the confident barking and the sudden complaining yelps makes it feel funny and endearing rather than distressing, which is why the moment reads instantly as classic cartoon dog comedy.