It's possible that it was something on the Astral Level since we all visit a lower layer of it while dreaming. It'd more than likely represent something your Unconscious Mind, Higher Self, etc. is trying to tell you.
I would first look at the supporting information in the dream to help you determine how to interpret it, such as location, activities before and after the wolf's emergence, etc. What do you associate with wolves? Each person tends to have preconceived notions about such things. That would change the interpretation.
In nature, wolves are quite good at being dogged hunters, tracking prey for miles if they have to. They also tend to be quite proud. Is something in your life needing to be reevaluated, having a rebirth or sorts? Perhaps you need to be dogged in this focus and work hard in achieving this goal, shedding the weight/skin that has been holding you back.
Dream interpretation is an interesting thing, and not all dreams mean much. However, Lucid dreams should be given consideration. You might find this page useful: http://www.unclesirbobby.org.uk/dreamdictionarywolves.php