Light brown or gray colored, and between 3-4 inches long with large ears and small eyes.

They build their nests in hidden places within 30 feet of their food source, and they are most active at dusk or during the night. They do not like bright lights.

House mice prefer to feed on grain cereals, but will eat plant matter, seeds, and some meat.

They carry diseases such as salmonella, leptospirosis, rat-bite fever, and lymphocytic choriomeningitis. These can be transmitted from the mice contaminating people and pet food.