Actually, from your article: "Coypu can also be mistaken for another widely dispersed semi-aquatic rodent that occupies the same wetland habitats, the muskrat. The muskrat, however, is smaller, more tolerant of cold climates, and has a laterally flattened tail that it uses to assist in swimming, whereas the tail of a coypu is round. It can also be mistaken for a small beaver, as beavers and coypus have very similar anatomies; beavers' tails are flat and paddle-like, as opposed to the round rat-like tails of coypu."
Yeah, I would've gotten that wrong and called it a muskrat"
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