I don't understand why people would want to turn into animals, especially if you're a fox or a wolf.
You have to consider all of the changes in your body, and I seriously doubt your mind won't be affected to.
Human hormones, behaivor, temperament, and of course body structure are completely different from most animals. It would be extremely disorienting to be another animals body, even if you transformed all of your life. Changing your entire chemical structure would be impossible to "get used to" and I'm not even scratching the surface.
But as someone in the medical field and more of a cynical type, that's just my take on it.