Dominant adult male nutria, myocastor coypus, scratching its genital and urinated on burrow entrance marking territory, dive into the water for a quick swim in the swampy environment

coypu nutria coypus beaver rodent otter rat male wildlife habitat species animal myocastor freshwater burrow scratch invasive mouse swamp mite itch territory den pest wild swim coipo urinate fur pee river environment hole groom dive infectious water lake south america behaviour genital disease dominant natural wet body europe clean entrance