Study sheet with drawing examples: heads, torso, and animals

Twelfth print from a series of drawing examples of unknown extent. Study sheet with top left a portrait of Lucas van Leyden, next to a second portrait of a man. Bottom left torso. Top right head of Mary Magdalene. Next to it a Moor's head. In the middle the head of a growling dog. Below a roaring lion. Around it animals: a flying eagle with a sheep in its claws, a heron, a squirrel, a hermit crab emerging from a shell, a hare with horns, a bird of prey and a squirrel. Some of the figures are numbered with pen 21-29. In the margin these numbers are repeated.