PF - Dog-headed St Christopher

Chris says: "The artists of the Middle Ages painted allegories, we say. What really happened was that they saw more clearly than we do, and painted what they saw - angels and devils, beasts, and half- human monsters like me." I wonder if he's thinking of images like this: http://en.wikipedia.org/wiki/Image:L_022.jpg Apparently St Christopher was sometimes described as cynocephalic. I doubt that Chris' test-tube included any dog (wolf?) DNA, but you never know ...