"Le vieux" 

This charcoal drawing is a portrait of a chimpanzee, created with great realism and sensitivity. The artist has captured the animal's expression and gaze, which seem to reflect a certain intelligence and emotion. The drawing is done with fine, precise strokes that create contrast and relief. Charcoal is used to play with shades of gray, from the lightest to the darkest, to give depth and texture to the chimpanzee's coat and face. The background is left white, highlighting the main subject and drawing the viewer's attention.