Animalia, April, Arvicolinae, Chordata, Cricetidae, Mammalia, Muroidea, North America, Ondatra zibethicus, Rodentia, US, USA, Wisconsin, animal, blue, close, close up, close-up, closeup, environment, fur, habitat, lake, mammal, muskrat, natural, nature, north american, north woods, northern, northwoods, outdoors, outside, pond, rat, river, rodent, spring, spring time, springtime, stream, swim, swimming, water, wet, wetland, wild, wildlife