Vintage Tekno Silver The Robotic Puppy Dog Motion Interactive. NO BONE. NO BATTERIES INCLUDED. WHEN WE TESTED IT, AS FAR AS I KNOW, EVERYTHING WORKS. THE SOUNDS AND HEAD MOVEMENT WORK. I KNOW IT IS SUPPOSE TO WALK BUT I CANT FIGURE OUT HOW TO MAKE IT WALK. I DONT KNOW IF IT NEEDS THE BONE TO DO SO. THIS ROBODOG DOES NOT HAVE ITS BONE. COSMETICALLY IT IS ALSO IN GOOD CONDITION. BUYER PLEASE NOTE I AM NOT SURE IF IT WALKS AND I DONT KNOW HOW TO DO IT OR THE WALKING MECHANISM DOESNT WORK.