Whoa! That life-size dinosaur walks forward and backward, jumps, and opens and closes its mouth—all with the touch of a button.If you shake a handheld device, it even barks.Think that’s cool? You’ll see even more wonders at the CEATEC Japan electronics exhibition. After you check out the dinosaur, you can play ping pong with a three-legged robot. You might even run into the robot Ms. Aiko Chihira. She looks a lot like a real person. It’s a little scary! She can speak to visitors using sign language.Some robots have important purposes. Inventors hope the ping pong robot can someday help people build things. But for now, these robots are just plain fun. Too bad they’re not for sale!