Ondatra zibethicus est maxima subfamiliaeArvicolinarum species, cui subfamiliae sunt 142 aliae rodentium species, plerumque animalia tribuum Arvicolinorum et Lemminorum (et aliquot aliarum tribuum). Ondatrae zibethiciratti aliquando vulgo appellantur, quia rodentia magnitudinis mediae sunt, modum vivendi adaptabilem et diaetamomnivoram habentes; species autem generis Ratti non est.
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