An artist claims he has found 'animal faces' unnoticed for over 500 years in the most famous painting in the world. Here's one of them :
From the UK Sun :
Ron found another hidden image — the crocodile or snake — by following instructions in another part of da Vinci's writings suggesting to tip the painting at a 45 degree angle. This was supposedly where the angle of the light was best and led to the least amount of reflection.You might need a handful of magic mushrooms to find them without da Vinci's instructions.
The instructions also called for the viewer to put their eyes on the same level as the horizon in the painting.
From this he was able to make sense of the line in the passage about how to paint envy which reads: "Make her heart gnawed by a swelling serpent", as there is such a creature emerging from her right breast.