A synchronized choropleth map and scatter plot visualize cat breed origins, lifespan, and weight. The map uses a `d3.geoEqualEarth` projection and threshold color scale to show breed counts by country, while the scatter plot displays jittered life expectancy against weight, colored by origin country. Both views, rendered as SVG with animation, share a tooltip. Data comes from the Kaggle Cat Breeds Details dataset, processed via React and D3 v6.