This animated scatter plot of the classic Iris dataset cycles through the four measured features (petal and sepal length and width) on the x-axis while keeping sepal length on the y-axis, using color-coded markers for the three species. The visualization highlights how different feature combinations separate species clusters, with a legend and axes updating at each interval. Built with D3.js (v6), it uses the `csv` loader to fetch data from a GitHub Gist and relies on D3’s `scaleLinear`, `extent`, `axisLeft`, and `axisBottom` APIs within a custom `scatterPlot` function to render the SVG marks and scales.