The 'Happiness Noise' meme features a blurry image of a dog, typically a pug or Shiba Inu, expressing visible excitement, accompanied by a closed-caption style subtitle that reads '[HAPPINESS NOISE].' While its exact origin is debated, it gained massive traction on Reddit and social media around 2019 as the ultimate wholesome reaction image. It is frequently used to convey overwhelming joy, satisfaction, or a positive response to heartwarming news. The template's popularity stems from its relatable, low-fidelity aesthetic and the universal appeal of happy animals, making it a staple for internet users wanting to express pure, wordless delight.