by Bobby LoxlinI commonly dream that I am running, but not just on two legs...
When I want to make good speed in my dreams, I run on my knuckles, or grip the ground with my hands to help pull me forward.
In your life do you ever feel like you are stuck in the same dead end job or lifestyle ? If so maybe in your dream when you drop to all fours it is just a way of showing you that you are looking for more traction to move forward in life.
sry for such a rudimentary interpretation of your dream.
I'm sure some fancy words could have kept it short