Close-up of Tyrannosaurus Rex dinosaur with mouth open.

AGGRESSION • ANGRY • ANIMAL HEAD • ANIMAL MOUTH • ANIMAL TEETH • ANIMAL THEMES • ANIMAL • APEX PREDATOR • ARTWORK • ATTACK • CARNIVORE • CLOSE UP • CLOSE-UP • CLOSEUP • COELUROSAURIA • COG • COLOR IMAGE • COPY SPACE • CREATURE • CRETACEOUS • CUTOUT • DANGER • DENTITION • DENTURE • DIGITALLY GENERATED IMAGE • DINOSAUR • DINOSAURS • DRIBBLE • EVOLUTION • EXTINCT • FEAR • FIERCE • FOREGROUND • FORT • GIGANTIC • GROWL • HEADSHOT • HISSING • HORIZONTAL • ILLUSTRATION • JAW • JURASSIC • LARGE • MENACE • MESOZOIC ERA • MONSTER • MOUTH OPEN • NATURAL HISTORY • NATURAL SCIENCES • NATURE STUDY • NO PEOPLE • ONE ANIMAL • OPEN MOUTH • OPEN-MOUTHED • PALAEONTOLOGY • PALAEOZOOLOGY • PALEONTOLOGY • PALEOZOOLOGY • PAST • PERIL • POWERFUL • PREDATOR • PREHISTORIC ERA • PRIMITIVE • PRIMORDIAL • PRONG • REPTIL • REPTILE • REPTILES • ROARING • RUGGED • SALIVA • SAUROPSID • SCIENCE • SCIENCE: EVOLUTION • SET OF TEETH • SHARP • SNARLING • SPECIES • SPIT (SALIVA) • STRONG • TEETH • THEROPOD • THREAT • THREE DIMENSIONAL • TOOTH • TOUGHNESS • TRIASSIC • TYRANNOSAURID • TYRANNOSAURUS • VERTEBRATE • VICIOUS • WHITE BACKGROUND • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY