Tyrannosaurus rex confronting a Triceratops.

AGGRESSION • AGGRESSIVE • ANIMAL BEHAVIOR • ANIMAL THEMES • ANIMAL • ANIMALS HUNTING • ANIMALS IN THE WILD • APEX PREDATOR • ARTWORK • ATTACK • BATTLE • BIPED • CARNIVORE • CERATOPSIA • CERATOPSID • CHALLENGE • COLOR IMAGE • COLOUR IMAGE • CONCEPT • CONFLICT • CONFRONTATION • CREATION • CREATURE • CRETACEOUS • DANGER • DAY • DIGITALLY GENERATED IMAGE • DINOSAUR • DINOSAURS • ENEMY • ENVIRONMENT • EVOLUTION • EXISTENCE • EXTINCT • FACE TO FACE • FACE-TO-FACE • FACING • FEAR • FIERCE • FIGHTING • FOUR ANIMALS • GROWL • HERBIVORE • HISSING • HORIZONTAL • HORNED • HOWLING • ILLUSTRATION • IMAGINATION • LARGE • LATERAL VIEW • LUNA • MEGAFAUNA • MENACE • MESOZOIC ERA • MOON • MOUTH OPEN • NATURAL HISTORY • NATURAL SCIENCES • NATURE STUDY • NO PEOPLE • OPEN MOUTH • OPEN-MOUTHED • ORIGIN • OUTDOOR • OUTDOORS • OUTSIDE • PALAEONTOLOGY • PALAEOZOOLOGY • PALEONTOLOGY • PALEOZOOLOGY • PAST • PERIL • PREDATOR • PREHISTORIC ERA • PREY • PRIMEVAL • PRIMITIVE • QUADRUPED • REPTIL • REPTILE • REPTILES • RIVAL • ROARING • SCIENCE • SCIENCE: EVOLUTION • SIDE VIEW • SNARLING • SURVIVAL • TERROR • THEROPOD • THREAT • TOUGHNESS • TRICERATOP • TRICERATOPS • TYRANNOSAURUS • VERTEBRATE • VIOLENCE • VIOLENCIA • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY