giant otter, pteronura brasiliensis, portrait in the river water with fish in mouth, rio negro, pantanal, brazil

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