The Werewolf Principle

Blurb

The Werewolf Principle is a 1967 science fiction novel by Clifford D. Simak. It was originally published by Putnam, with a paperback edition following from Berkley Books in 1968. A British hardcover was also released in 1967, with translations following into French, Italian, German, Portuguese, Dutch, and Lithuanian. Later American paperbacks were issued by DAW Books and by Carroll & Graf.
The novel deals with an amnesiac space traveler who discovers he shares his body with a wolf-like alien and a cybernetic consciousness.