Did you know that a sauropod could have been as long as five elephants or as tall as three giraffes? That a T-rex's mouth was big enough to swallow a child in one gulp? Or that some dinosaurs were real boneheads? Journey into the prehistoric world of terrifying pterosaurs, armour-plated giants and monsters of the deep - then pit your wits against the Clever Clogs brain-boggling dinos quiz!