armor armored armorment armour armoured armourment Australian-freshwater-crocodile backstraps bony-ridges crocodile crocodylus-johnsoni danger dorsal-surface exotic fauna fresh-water-crocodile freshie hide Johnstone's-crocodile leather leathery lethargic omnivorous opportunistic opportunistic-predator osteoderms patterns powerful predator reptile reptilian ridges rough rugged scales scutes semi-submerged skin tail tail-scutes territorial texture textured textures basking bony ridges crocodilian crocodylus-johnstoni dangerous hornback Johnston's-crocodile large reflection crocodylus-porosus estuarine-crocodile huge Indo-Pacific-crocodile largest-reptile saltwater-crocodile americas apex-predator big-cat black-spots Camouflage carnivore carnivorous circles coat distinctive feline fur in-decline jaguar mammal near-threatened panthera-onca pelt powerful-jaws relaxed rosettes solitary spots spotted sprawled-out stalk-and-ambush-predator stalker stalking stocky strongest-bite third-largest-feline zoo