Rodentia: Muridae, Mus musculus.
The common house mouse is a small, slender rodent that has a slightly pointed nose; small, black, somewhat protruding eyes; large, scantily haired ears, and a nearly hairless tail with obvious scale rings. The adult mouse weighs about 2/5 to 4/5 ounces. They are generally grayish-brown with a gray or buff belly. House mice live in and around homes, farms, commercial establishments, as well as in open fields and agricultural lands. The cold weather very often cause mice to move into structures in search of shelter and food. A typical house mouse is capable of fitting through an opening as small as 1/4 of an inch making it rather easily for them to fain access into a structure. They do this by the ability they have to be able to dislocate their joints and manipulate their body through amazingly small openings.
A single mouse eats only about 3 grams of food per day (8 pounds per year) but because of their habit of nibbling on many foods and discarding partially eaten items, mice destroy considerably more food than they consume