The robotic dinosaur appears and behaves realistically. The toy walks, chomps his jaw, bares his teeth, wags his tail, roars and more in response to stimulation and what he wants. The D-Rex responds to touch, voices and more. “D-Rex combines robotics, proprietary software and reptilian skin to create a life-like appearance and behavior,” Michele Sturdivant, director of PR and communications for Mattel Brands, told TDmonthly. Launch date: Fall 2008.