Albert Eckhout – Study of Two Brazilian Tortoises Mauritshuis

The picture has something of this: turtle, tortoise, reptile, shell, animal, slow, shell (food), wildlife, nature, armor, shield, head, zoology, zoo, hard, endangered, species, vertebrate.
Perhaps it’s a painting of two tortoises facing each other on a piece of paper with one tortoise on it’s back and the other tortoise facing away from.