This stacked bar chart displays animal categories across groups, with bars segmented into four value columns (A–D) and shaded by group membership (Domestic, Pest, Africa, Marine). Built with D3 v5 and rendered as SVG, it uses `d3.stack()` to generate the stacked series and `d3.scaleOrdinal()` with custom color ranges to differentiate segments. The data comes from `data.csv`, loaded via `d3.csv()` with `d3.autoType`, and each bar’s total is computed dynamically from the column values. The chart’s differential shading highlights how group colors map across categorical divisions.