This interactive puppy magically grows up to be full-sized dog in only four days! Just as easily, the dog can magically become a puppy again! As the puppy grows, it learns to know your name, its own name and when it is being fed or groomed. Plus, the puppy can even sing songs using your name! Includes a bone, brush, tape measure, growth chart, birth certificate and programming CD. Requires standard USB A to USB B cable (not included). Puppy also available in black & white or tan colors. Requires 4 AA batteries