rat river wetlands habintant animals baby riverbed myocastoridae family member rodent semiaquatic herbivorous coypu nutria

nutria young furry habitat habit duck pond group otter beaver swimming river bank invasive european wilderness wild animal migration herbivorous nature water wildlife brown rat green outdoors wet fur rodent cute mammal grass eating fauna lake muskrat mouse squirrel wetlands habintant animals baby riverbed myocastoridae family member semiaquatic coypu generated use