siamese crocodile crocodylus siamensis floating in still water

alligator alligators amphibians animal aquatic asia big biology black brown calm cambodia carnivore chordata closeup creature crocodile crocodilian crocodylus cruel danger dangerous endangered environment exotic eye fauna fear ferocious float forest frightening gharial head hunter jaws jungle laos long look looking lurk lurking nature observe patient powerful predator predatory prey rainforest reptile reptilia river science semiaquatic siam siamens siamese southeast sparser species still tail thailand tropical water wildlife zoology