In Klause's novel, the "loup-garoux" are a separate species from humans and wolves, but with elements of both in behavior and anatomy - referring to themselves as "Homo lupus". There are two differing accounts of their origins alluded to in the book; some believe they are descended from a prehistoric breed of canine which absorbed protean matter from a meteorite which enabled them to shape-shift into humans, others that they were a tribe of ancient human hunters blessed by the moon goddess Selene. Most "loup-garoux" follow the latter account and thus worship Selene as their patron and mother.