== Question == 

 "When people believe they change into an animal form (theriomorphosis), or possess supernatural non-human animal traits, the term clinical lycanthropy is often used.  This classification is a form of mental illness, though many anthropologists would point out that the belief has extensive religious precedent in shamanic cultures." 

 :Well, firstly, the classification is not a form of mental illness... clinical lycanthropy would be the illness. Subtle distinction, but as it is currently worded it sounds strange. Anyway, my question is what is the source for the anthropologists, and which shamanic cultures have this religious precedent? It would be good to clarify this, if only for NPOV and citation reasons. -