Their tails are hairless and shorter than their head and body. The house mouse is smaller and more slender than the Norway rat. Its eyes are small and ears are quite prominent. The muzzle is pointed. The average size of a house mouse is 3 inches and they weigh 1 ounce or less.
House mice are light brown to dark gray in color with a lighter colored belly.
Its tail is about as long as its head and body. Deer mice have large eyes which also distinguish them from house mice. Damage Rats and mice cause damage by gnawing, urinating, defecating, and nesting. The damage to food is much greater as a result of contamination than it is from actual loss from feeding. Deer mice are also capable of transmitting the Hantavirus, a serious, often fatal, human respiratory disease.