A little boy, aged three years and eleven months, was told by his father that their dog had been run over by a motor car, the wheel of which had passed over the abdomen. A little later he saw some blood on the steps and was told that it had come from the dog. He did not know that actually the wheel had bruised the glans penis, from which the blood had come. The dog had been taken to a canine hospital, and, as no evidence of internal injury was detected, he was brought home in a couple of days. A few minutes after the child had seen him he went up to his mother and remarked 'Pat (the dog) is blind and