A fan of Leonardo studies Massimo Grandicelli asserts that the Madonna of the Cat preserved in the British Museum hides Leonardo's head in the likeness of a cat. The eyes can be distinguished, the left looking at the drawing just below the forearm of the Madonna, the right hidden under the child's leg, the sketches on the sides and bottom of the drawing reveal the contours of the face. this discovery led him long ago to write the historical novel "In the year of the cat" remained incomplete.