A Yorkshire police constable sent this image to the Strand in 1907: “This photograph of dog and puppies was about to be thrown away as a failure, when on turning the picture sideways it was found that the dog’s body has the appearance of a man’s head”:

This undated photo seems to reveal the image of a bearded Jesus:

And Bohemian artist Wenzel Hollar etched Landschafts-Kopf in the 17th century:

Is it a portrait or a landscape?