A T-rex chasing a pair of Parasaurolophus dinosaurs.

ACTION • AGGRESSION • AGILITY • ANIMAL THEMES • ANIMAL • ANIMALS HUNTING • ANIMALS IN THE WILD • APEX PREDATOR • ARTWORK • ATTACK • BATTLE • BEAST • BIPED • CARNIVORE • CHALLENGE • CHASING • COLOR IMAGE • CONCEPT • CONFLICT • CONFRONTATION • CREATION • CREATURE • CRETACEOUS • DANGER • DAY • DIGITALLY GENERATED IMAGE • DINOSAUR • DINOSAURS • DUCKBILL DINOSAURS • ENEMY • ESCAPE • EVOLUTION • EXISTENCE • EXTINCT • FEAR • FIERCE • FIVE ANIMALS • FLEE • FRIGHT • FRIGHTENED • FRONT VIEW • GROUP OF ANIMALS • HADROSAURID • HERBIVORE • HORIZONTAL • ILLUSTRATION • IMAGINATION • JURASSIC • LARGE • MAMMAL • MEGAFAUNA • MENACE • MESOZOIC ERA • MONSTER • MOTION • NATURAL HISTORY • NATURAL SCIENCES • NATURE STUDY • NATURE • NO PEOPLE • ON THE MOVE • ORIGIN • ORNITHISCHIA • ORNITHOPOD • OUTDOOR • OUTDOORS • OUTSIDE • PALAEONTOLOGY • PALAEOZOOLOGY • PALEONTOLOGY • PALEOZOOLOGY • PANIC • PARASAUROLOPHUS • PAST • PERIL • PLANT • PREDATOR • PREHISTORIC ERA • PREY • PRIMEVAL • PRIMITIVE • RIVAL • RUN AWAY • RUNNING • SCARED • SCIENCE • SCIENCE: EVOLUTION • SPECIES • SURVIVAL • TAG (GAME) • TERROR • THEROPOD • THREAT • TOUGHNESS • TYRANNOSAURUS • VIOLENCE • VIOLENCIA • WILDERNESS • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY