The February 2007 issue of Acta Psychiatrica Scandinavica contains an interesting clinical lycanthropy case study. While cases in which the patient believes the he/she is being transformed into an animal have been reported in the literature, belief in the transformation of another person into an animal is considerably rarer. In the presented case study, a young male patient who had been diagnosed with first-episode mixed bipolar mood disorder , developed a delusional conviction that his mother had been transformed into a wolf. While he did not have any delusions regarding the transformation of himself into an animal, he reported drooling for months before developing a delusional belief regarding his mother. It is suggested by the authors that this delusion represents a variation on the classic lycanthropy syndrome.