“Clinical zoanthropy, or the conviction of having turned into an animal, is a rare delusion”, they write.

The early days of Christianity are naturally full of incidents of this kind, but what is remarkable, zoanthropy was then already treated as a mere delusion.

Symptoms of zoanthropy typically range from one hour to several decades.

For this is one of the specially fearful magic phenomena of zoanthropy that it is apt to produce in healthy persons the same delusion as in the sufferer.