Dinos Unleashed dinosaurs open their mouths and roar every time the little ones move a certain part of their body! Triceratops, Raptor, Spinosaurus or T-Rex are available in the collection, and each of them produces a loud roar sound that befits a real dinosaur! Realistic details and sound effects that are heard every time a dinosaur opens its mouth will let everyone know that they are strong and vicious animals that once ruled the planet!