First-generation "AIBO" entertainment robot for home use. Imaginative design, down to the details of AIBO's legs, ears, and tail, breathed life into this metal body and made the little robot as cute as a real dog. "AIBO" is quite an expressive pet, thanks to eighteen types of joints in the legs, neck, tail, and upper jaw. What's more, "AIBO" could learn and grow up—simulations based on research in artificial intelligence. After repeated communication with users, "AIBO" learns and expresses a range of emotions when responding. The robot's realistic behavior was quite a hit at launch.