This example demonstrates how to build interactive dropdown menus using React, showing a pet selection interface that updates its state as the user chooses an option. The code uses React’s `useState` hook to manage the selected value and a custom `Dropdown` component that renders a native HTML `<select>` element. It leverages ReactDOM’s `render` method to mount the app, with options defined as a static array of pet objects. The example highlights React’s component-based approach for handling user input and state management without external visualization libraries.