 They guard their society and their young with equal ferocity, which can be surprising since an immature Codru-Ji appears almost nothing like a mature Codru-Ji, and in fact can be mistaken for a pet.Immature Codru-Ji, also known as Wyrwulf, are small, six-limbed lupine creatures who enter a chrysalis phase in puberty and emerge a mature Codru-Ji.The Coway appear in the 1978 novel "Splinter of the Mind's Eye", by Alan Dean Foster.