A werewolf is a creature that does not exist in the physical world. He is symbolic of a man that turns into a monster, a normal person that transforms into a bloodthirsty animal.
The werewolf may represents something in your life or in your own personality. When interpreting this dream, consider internal and external factors that generally seem normal but have a tendency to transform into undesirable, hurtful, or dangerous concerns in your life.... The Bedside Dream Dictionary
Dreams of a werewolf signify your connection and integration with your animal instincts, and that you have been perhaps overindulging in your base needs and desires. This dream might also be showing you that you have been predatorial and/or that you have been taking without reciprocation. See Vampire and Animal.... Strangest Dream Explanations