This tree chart displays the taxonomic hierarchy of cat species, starting from the Felidae family and branching into subfamilies like Pantherinae and Felinae, then to genera and individual species. The visualization uses a dendrogram layout with curved bezier links connecting nodes, where each node is color-coded by a `level` property and labeled with the species name. The implementation relies on D3.js v5 functions including `d3.hierarchy` and `d3.tree` to compute node positions, while the dataset is defined inline as a JavaScript object with nested `children` arrays. SVG is the rendering mode, with node circles and link paths styled via CSS classes.