There are many wild cousins, the domestic mouse is not the same as the field mouse. Mice as Pets Mice, if handled gently, can make good, small pets. They are timid, social, omnivores, territorial and easily escape their cages. They only weigh 1-2 ounces. They do not tend to bite, but some types are more aggressive than others.
Wild mice are nocturnal, but domestic mice can have periods of activity both day and night.
They are secretive, love to burrow, and build nests. Humans can develop allergies to the dander, urine or hair of mice. Male mice may have an offensive odor to their urine. Housing Mice can be housed in wire or plastic cages but care must be taken to prevent escape or fractured limbs in wire. Cages should be spacious and at least 5-6 inches high.