Master painter Albrecht Durer's rabbit would look like a smudge (top right) to a snake relying on uncorrected images from heat sensing pit organs. But a virtual lens in the neural net of a snake's brain would dramatically enhance the image (lower right) and explain why snakes are so good at finding prey in the dark. Credit: Andreas B. Sichert, Paul Friedel, and J. Leo van Hemmen, Physical Review Letters