Yes, I agree, the shape shifting must mean something. Each time it is an animal turning into a human, yourself most often. Maybe there is a diabolical stranger who wants to be just like you? (just kidding) Or maybe the dream is trying to tell you something about yourself. Perhaps you have the instincts of a cat, and they manifest themselves in your dreams? Maybe you need to allow yourself to follow your instincts in real life? Just hazarding a guess. Good luck finding the answers behind these dreams!