Line weight. Perspective. The tilting of the head. Expression. Volume.
This early Modern human knew exactly what we learn to this day in order to create the illusion of life in 2d art.
Whoever they were, I admire them as much as every other great master.
Reminder that we have evidence prehistoric cave dwellers were capable of drawing realistic depictions, and the stylization you see here—the line weight, the implied movement, the accentuated features—are thought to have been deliberate, artistic, aesthetic choices