Mus musculus Linnaeus, 1758.

A small mouse that is gray or light or dark brown on the back with white or buffy underparts. It is about 8.4cm long and weighs just 15g with a bi-colored tail, brownish above and whitish below that is roughly half as long as its head and body. The house mouse is nocturnal and communal and can be commensal, living in houses and gardens; as well as in grain stores and fields. Its burrows are shallow, usually in walls or under shrubs or grass. It feeds on crops, stored agricultural products and food waste. In some areas it is a serious pest.