Animalia, April, Arvicolinae, Chordata, Cricetidae, June, Mammalia, Muroidea, North America, Ondatra zibethicus, Rodentia, US, USA, Wisconsin, Wisconsin lake, animal, blue, blue water, brown, close, close up, close-up, closeup, environment, fauna, green, habitat, lake, mammal, muskrat, muskrat in water, muskrat swimming, natural, nature, near, north american, north woods, northern, northern Wisconsin, northern lake, northwoods, rat, river, rodent, stream, summer, summer time, summertime, swim, swimming, water, waterway, wetland, wild, wilderness lake, wildlife