Animalia, Arvicolinae, Chordata, Cricetidae, Mammalia, Muroidea, North America, Ondatra zibethicus, Rodentia, USA, Wisconsin, abundant, brown, common, critter, fauna, fur, lake, muskrat, natural, nature, north american, northwoods north woods, pond, rat, reddish, rodent, semi aquatic, semi-aquatic, semiaquatic, spring, stream, swim, swimming, thick fur, vegetarian, water, wetland, wild, wildlife