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The refrences which concern Iranian Fauna admit the presence of one species from genus Mus which is called Mus musculus L. 1766.
However our studies of Bhhemica1 Genetics of some individual from Qazvin city and Dastjerd village (Lat. 35 15 N and Lon. 49 45 E) which are based on the technique of starch Gel Electroforesis, Indicate that there are two species of Gnus Mus “Mus musculus Linnaeus 1766 and Mus mecedonicus Petrov and Ruzic 1983 in sympartic at this region where M. macedonicus exist outdoors and M.musculus indoors.