The Windup Miss Chickie is a toy introduced in Nintendogs + Cats along with Sir Nibbles and Mr Froggins. It replaces the Wind-Up Toy from Nintendogs. It is a yellow chick with a silver wind-up handle that makes the toy walk along with a "tweeting" sound. It can be bought from the Neighborhood BARC shop when unlocked with 5,400 Owner Points for $8.
3DS (US): "Miss Chickie has a cute little waddle. Wind her up and play!"
3DS (UK): "Miss Chickie has a charming waddle. Wind her up and play!"