While some of the Roullet et Decamps animal automata use real fur, I don't think they ever use entire animals. Inspired or creepy? The idea of using preserved mice in an automaton is fascinating to say the least!
From the ebay description:
The piece is one of a series of circus themes, and it is titled "The Lesson". The larger mouse who wears a ringleader style suit bounces high on his ball, while the smaller mouse only jumps a little way up. Juggling balls are scattered around where they have been practicing balancing and juggling. A very small mouse, too young to train yet, helps by picking up the balls and handing them back to the ringmaster.
Here is where you can learn more about the automaton with taxidermy mice.