A smiling animal face built from D3.js SVG shapes demonstrates basic DOM manipulation. The example constructs the figure using circles and lines for features like eyes, pupils, ears, whiskers, and a nose, all positioned with the `attr` method. It uses `d3.select` to append elements to an SVG canvas. No data or interactivity is present; the sketch is static, showing only how D3 can create and style primitive vector shapes.