What does this dream mean? Please read!?

Ok, for a few years I have been getting dreams about the same thing. I am in a long corridor, and I start to run as if running on the moon (no gravity) But I do not get pulled up. So i'm running a god it feels great, I try to do it out side in reality but it doesn't work, though I love it so much. And then at the end, I turn into either a fox, otter or toucan and do it again as one of those animals. What does it mean? I do not sleep walk but I do sleep sing. What does it mean? Will chose best answer