It's stuffed with 38 sensors to detect light, motion, touch and sound. They feed information about Pleo's environment to one of eight processors that can handle a collective 60 million calculations per second. A complex computer program determines what the dino does next-howl over the edge of a table, sneeze, crane its neck around 180 degrees to see who´s scratching its back, or any of thousands of other possibilities. As Pleo´s manufacturer, Ugobe in Emeryville, California, develops more sophisticated personality coding, you´ll be able to upgrade the robot through its SD-card slot or from the Web through its USB port. Pleo´s Jurassic competition, the WowWee Roboreptile, successor to the popular Robosapien, also hits shelves this fall.