Tyrannosaurus Rex growling as a fellow T-Rex runs away.

AFRAID • AGGRESSION • ANCIENT • ANGER • ANIMAL THEMES • ANIMAL • APEX PREDATOR • ARTWORK • ATTACK • BEAST • BIPED • CARNIVORE • CLOUD • CLOUDS • COELUROSAURIA • COLOR IMAGE • COLOSSAL • COLOUR IMAGE • CREATURE • CRETACEOUS • DANGER • DAY • DIGITALLY GENERATED IMAGE • DINOSAUR • DINOSAURS • ESCAPE • EVOLUTION • EXISTENCE • EXTINCT • FEAR • FIERCE • FURIOUS • FURY • GIGANTIC • GROWL • HILL • HISSING • HORIZONTAL • ILLUSTRATION • ILLUSTRATIONS • JAW • JURASSIC • LANDSCAPE • LANDSCAPES • LARGE • LATERAL VIEW • MENACE • MESOZOIC ERA • MONSTER • MOUNTAIN • MOUTH OPEN • NATURE • NO PEOPLE • OPEN MOUTH • OPEN-MOUTHED • OUTDOOR • OUTDOORS • OUTSIDE • OVERCAST • PALAEONTOLOGY • PALAEOZOOLOGY • PALEONTOLOGY • PALEOZOOLOGY • PAST • PERIL • POWERFUL • PREDATOR • PREHISTORIC ERA • PRIMEVAL • PRIMITIVE • REPTIL • REPTILE • REPTILES • ROARING • RUNNING • SAURISCHIA • SCIENCE: EVOLUTION • SIDE VIEW • SKY • SNARLING • SPECIES • STANDING • STORM • TERRAIN • TERRIBLE • THEROPOD • THREAT • THREE DIMENSIONAL • TOUGHNESS • TWO ANIMALS • TYRANNOSAURUS • VERTEBRATE • VICIOUS • WILDERNESS • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY