Ankylosaurus hits Tyrannosaurus rex with it's clubbed tail in self-defense.

ACTION • AGGRESSION • ANGER • ANIMAL BEHAVIOR • ANIMAL LEGS • ANIMAL TAIL • ANIMAL THEMES • ANIMAL • ANIMALS HUNTING • ANIMALS IN THE WILD • ANKYLOSAUR • ANKYLOSAURID • ANKYLOSAURUS MAGNIVENTRIS • ANKYLOSAURUS • APEX PREDATOR • ARMORED DINOSAURS • ARTWORK • ATTACK • BATTLE • BEATING • BIPED • CARNIVORE • CHALLENGE • CHASING • COELUROSAURIA • COLOR IMAGE • COLOUR IMAGE • CONFLICT • CONFRONTATION • CREATURE • CRETACEOUS • DANGER • DAY • DEFENDING • DETAIL • DIGITALLY GENERATED IMAGE • DINOSAUR • DINOSAURS • DUST • ENEMY • ESCAPE • EVOLUTION • EXISTENCE • EXOSKELETON • EXTINCT • FEAR • FIERCE • FIGHTING • FRIGHT • FRIGHTENED • FRONT VIEW • FRUSTRATION • FURY • GROWL • HERBIVORE • HISSING • HIT • HITTING • HORNED • ILLUSTRATION • ILLUSTRATIONS • JURASSIC • LARGE • MENACE • MESOZOIC ERA • MOTION • MOUTH OPEN • NO PEOPLE • ON THE MOVE • OPEN MOUTH • OPEN-MOUTHED • OSTEODERM • OUTDOOR • OUTDOORS • OUTSIDE • PAIN • PALAEONTOLOGY • PALAEOZOOLOGY • PALEOART • PALEOBIOLOGY • PALEONTOLOGY • PALEOZOOLOGY • PANIC • PAST • PERIL • POWERFUL • PREDATOR • PREHISTORIC ERA • PREY • PRIMEVAL • PRIMITIVE • PROTECTION • PUNCH • REPTIL • REPTILE • REPTILES • RIVAL • ROARING • RUNNING • SAUROPSID • SCARED • SCIENCE • SCIENCE: EVOLUTION • SCUTE • SNARLING • SPECIES • SPIKED • STRENGTH • STRIKING • STRUGGLE • SURVIVAL • TAG (GAME) • TERRAIN • TERROR • THEROPOD • THREAT • THREE DIMENSIONAL • TOUGHNESS • TWO ANIMALS • TYRANNOSAURUS • VERTEBRATE • VERTICAL LINES • VERTICAL • VICIOUS • VICTIM • VICTIMS • VIOLENCE • VIOLENCIA • WILDERNESS • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY