This scatter plot shows the relationship between pet age and weight, with each circle representing an individual pet. The visualization uses a D3.js v7 SVG rendering pipeline to map data points, with `d3.scaleLinear` for both axes and `d3.extent` for domain calculation. The chart includes axis labels and applies a teal fill with 0.6 opacity to the circles. Data is loaded asynchronously via `d3.csv` from a remote gist source, and the axes are generated using `d3.axisBottom` and `d3.axisLeft`.