From the ebay desctiption:
This 1890's Roullet and Decamps automaton windup pig is a survivor. It looks to need some love but still a real cool mechanical toy. Pig shows a lot of wear and I do not have the key to see if the windup works. The toy is 11 inches long by 5 inches high and has glass eyes.
Here is the full ebay listing with many additional pictures of this Roullet & Decamps windup automaton pig.