Chosen Solution

Why dose. Furby not move at all stays there and shuts down

Try new battery replacement, 4x AA Batteries.

Trt to reset the furby and cleaning the battery terminals if there dirty. If this doesn’t work then the the small 6V brushless DC motor went wrong, you can replace it with one from a PC DVD reader (this is the door opener motor). Shaft is smaller but it’s ok, diameter is good.