This interactive family-tree visualization uses D3.js v3 with an animated, expandable node-link diagram. It displays a hierarchical dataset of animal classifications and family member names, rendered as colored rectangles connected by curved links. The tree layout algorithm, `d3.layout.tree`, computes node positions, while custom SVG elements and CSS styling via `tree-boxes.css` create the visual presentation. The implementation includes zoom and drag behavior, tooltips, and collision detection to manage overlapping nodes.