From the eBay item description
Clockwork windup mechanism that when wound activates both the movement of the rabbit and the music box inside. After winding just pull the activation rod and the music begins. Rabbit emerges from the cabbage with a slight turn to the right, chews a small piece of cabbage in its mouth, raises and lowers its ears while chewing, quickly makes a slight left turn and drops back into the cabbage. Rabbit fur covered metal skeleton with glass eyes.
Here is the eBay listing with many additional photographs of the rabbit eating cabbage automaton.