Herrerasaurus, an early dinosaur, attacks a dicynodont.

AGGRESSION • ANGRY • ANIMAL BEHAVIOR • ANIMAL BODY • ANIMAL MOUTH • ANIMAL TEETH • ANIMAL THEMES • ANIMAL • ANIMALS HUNTING • ANIMALS IN THE WILD • ANOMODONT • ARTWORK • ATTACK • BATTLE • BIPED • BITING • CARNIAN • CARNIVORE • CLAW • CLAWS • COLOR IMAGE • COLOUR IMAGE • CONFLICT • CONFRONTATION • CREATURE • DANGER • DAY • DEFEAT • DICYNODONT • DIGITALLY GENERATED IMAGE • DINOSAUR • DINOSAURS • ENEMY • ENVIRONMENT • EVOLUTION • EXTINCT • FEAR • FIERCE • FIGHTING • FOOD CHAIN • FOREST • FOUR ANIMALS • GROWL • HABITAT • HERBIVORE • HERRERASAURUS ISCHIGUALASTENSIS • HERRERASAURUS • HISSING • HOPPING • HORIZONTAL • HUNGRY • ILLUSTRATION • ILLUSTRATIONS • JAW • JUMP • JUMPING • KILL • KILLING • KILLS • LANDSCAPE • LARGE • LATERAL VIEW • LEAPING • MAMMAL • MENACE • MESOZOIC ERA • MOUTH OPEN • NATURAL HISTORY • NATURAL SCIENCES • NATURE STUDY • NATURE • NO PEOPLE • OMINOUS • ON TOP OF • OPEN MOUTH • OPEN-MOUTHED • OUTDOOR • OUTDOORS • OUTSIDE • PALAEONTOLOGY • PALAEOZOOLOGY • PALEOART • PALEOBIOLOGY • PALEONTOLOGY • PALEOZOOLOGY • PAST • PERIL • POWERFUL • PREDATOR • PREHISTORIC ERA • PREY • PRIMEVAL • PRIMITIVE • PRIMORDIAL • QUADRUPED • REPTIL • REPTILE • REPTILES • RIVAL • ROARING • SAURISCHIA • SCIENCE • SCIENCE: EVOLUTION • SIDE VIEW • SKIPPING • SNARLING • SPECIES • STRENGTH • STRUGGLE • SURVIVAL • SYNAPSID • TALON • TERROR • THERAPSID • THEROPOD • THREAT • TOUGHNESS • TRIASSIC • VERTEBRATE • VICIOUS • VICTIM • VICTIMS • VIOLENCE • VIOLENCIA • VULNERABILITY • WILDERNESS • WILDLIFE • WITHOUT PEOPLE • WOODLAND • WOODLANDS • WOODS • ZOOLOGY