Wooden Kinetic Dog-chasing-tail

This is a wooden dog that I made that runs in circles chasing its own tail.
- the key is hand cranked, spinning the top half of the base
- as the top base spins, it spins the 'pistons'  and make the legs move
        - the wood squeaks, but it sounds like a whimper =]
- it's a dog chasing its tail! what else

tilt your head to watch video: http://youtu.be/EXPoK3-upGg