Animated Roaring T-Rex Dinosaur One of the largest land dinosaurs in history, the T-Rex was a force to be reckoned with. Our version is too cute to be scary but he still roars menacingly while he swishes his tail. Featuring 5 different "roaring" sounds, it will captivate your dinosaur lover. Includes 3 AA batteries. On/off switch. Plastic and polyester. 11"H.