An Acrocanthosaurus observes a Tenontosaurus being attacked by Deinonychus.

ACROCANTHOSAURUS ATOKENSIS • ACROCANTHOSAURUS • AGGRESSION • ANIMAL BEHAVIOR • ANIMAL TAIL • ANIMAL TEETH • ANIMAL THEMES • ANIMAL • ANIMALS HUNTING • ANIMALS IN THE WILD • APEX PREDATOR • ARBOL • ARTWORK • ATTACK • BACKBONE • BATTLE • BIPED • BIRD • BIRD: BIRDS OF PREY • BIRDS OF PREY • BITING • BLEEDING • BLOOD • CARNIVORE • CARNOSAURIA • CATCHING • CHALLENGE • CLAW • CLAWS • COLOR IMAGE • CONFLICT • CONFRONTATION • CONTOUR FEATHERS • CREATURE • CRETACEOUS • DANGER • DAY • DEAD ANIMALS • DEAD • DEATH • DEFEAT • DEINONYCHUS ANTIRRHOPUS • DEINONYCHUS • DETAIL • DIGITALLY GENERATED IMAGE • DINOSAUR • DINOSAURS • DROMAEOSAURID • EATING • ECOSYSTEM • ENEMY • ENVIRONMENT • EVOLUTION • EXISTENCE • EXTINCT • FEATHER • FIERCE • FIGHTING • FIVE ANIMALS • FLESH • FOOD CHAIN • FOOD • HABITAT • HEMMORHAGE • HEMORRHAGE • HEMORRHAGED • HEMORRHAGING • HIDING • HOPPING • HORIZONTAL • HUNGRY • IGUANODONT • ILLUSTRATION • JUMP • JUMPING • KILL • KILLING • LAKE • LANDSCAPE • LANDSCAPES • LATERAL VIEW • LEAPING • LOOKING ON • MENACE • MESOZOIC ERA • MOTION • NABBING • NATURE • NO PEOPLE • ON TOP OF • ORNITHISCHIA • ORNITHOPOD • OUTDOOR • OUTDOORS • OUTSIDE • PAIN • PALAEONTOLOGY • PALAEOZOOLOGY • PALEOART • PALEOBIOLOGY • PALEOGEOGRAPHY • PALEONTOLOGY • PALEOZOOLOGY • PAST • PERIL • PREDATOR • PREHISTORIC ERA • PREY • PRIMEVAL • PRIMITIVE • PROWLING • PULLING • RAPTOR • RIVAL • SALTMARSH • SANGUINE • SAUROPSID • SCIENCE • SCIENCE: EVOLUTION • SHARING • SIDE VIEW • SKIPPING • SPECIES • SPINE • SPLITTING • STALKING • STRENGTH • STRUGGLE • SURVIVAL • TALON • TENONTOSAURUS • TERROR • THEROPOD • THREAT • THREE DIMENSIONAL • TOUGHNESS • TREE • TREES • VELOCIRAPTOR • VICIOUS • VICTIM • VICTIMS • VIOLENCE • VIOLENCIA • WAITING • WATCHING • WATER'S EDGE • WATER • WILDERNESS • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY