A rare case of provoked anal penetration of an 11 year-old boy by a male Ge
rman shepherd dog was confirmed by the results of morphological, serologica
l and molecular genetic investigations. These results were of great importa
nce to refute the suspicion on two adults. Some serious doubts remained in
the version of the course of the event as presented by the boy. Some weeks
later when confronted by a psychologist, the boy admitted having deliberate
ly stimulated the dog manually and caused the animal to penetrate him.