giant otter, pteronura brasiliensis, portrait in the river water with fish in mouth, animal in the nature habitat, rio negro, pant

amazon america animal aquatic black branch brasiliensis brazil brown carnivore close closeup cute eating ecology endangered feed feet fish food forest funny fur giant habitat head jungle kill life mammal mouth mustelidae nature negro nose otter pant pantanal peru portrait predator pteronura rain rio river small south swim the tropical water weasel wet whiskers wild wildlife with