A yellow smiley face is drawn with D3.js, featuring circular eyes, a curved mouth, and rectangular eyebrows that animate upward and back in a looping motion. The example demonstrates fundamental SVG DOM manipulation by selecting an `<svg>` element and appending grouped shapes with `d3.select` and `append`. It uses D3's `arc` generator to create the mouth path and `transition().duration()` to move the eyebrows and mouth, with attributes like `attr` and `translate` transforms controlling position and animation.