🍩 Doughnut is one of the animated emoji in Google's Noto Emoji Animation set — the same doughnut emoji (U+1F369) drawn as a short looping Lottie animation. Lottie files are vector, so the animation stays sharp at any size and is usually much lighter than a GIF or a video.
🍩 is the doughnut emoji, part of Unicode's Food & Drink group, added in Emoji 0.6 (2010). Unicode's keyword list links it with “breakfast”, “dessert”, “donut”, and “food”.

