closeup side on portrait of black caiman melanosuchus niger swimming in water with jaws open showing teeth in the pampas del yac

alligator amazon amazonas america animal animals black bolivia caiman camouflage carnivore closeup croc crocodile danger dangerous del destinations eye forest gator head jaws melanosuchus mouth nature niger open pampas portrait predator reptile river rurrenabaque scales scary showing side skin south swimming teeth travel water wild wildlife yac yacuma