Argentinosaurus is one of the biggest sauropods, a group of enormous, long-necked, and plant-eating dinosaurs. Read about this gentle giant and a range of other fascinating dinosaurs, including a fearsome meat-eater Acrocanthosaurus; Huayangosaurus, whose back and tail were studded with bony plates and spear-like spikes; duck-billed Kritosaurus; Alxasaurus, a feathered dinosaur with long, knife-like claws; and Bambiraptor, a small but vicious hunter.