House Mouse

The house mouse (*Mus musculus*) is a small rodent native to Eurasia that now lives worldwide, largely through association with humans.

The house mouse (Mus musculus) is a small rodent native to Eurasia that now lives worldwide, largely through association with humans. It is one of the most widespread mammals and is commonly found near buildings, farms, warehouses, and other human-made environments. The species is also important in biological research as the ancestor of many laboratory mice.

Description

House mice are small grey-brown rodents with large ears, a pointed snout, and a long tail that is usually nearly hairless. Reported size and weight vary by source, but adults are typically around 10 cm long and about 20 g.

Distribution and habitat

The species originated in Eurasia and has spread worldwide with humans. It is strongly associated with buildings and other human environments such as farms, warehouses, sheds, and homes.

Diet and behaviour

House mice are omnivorous and feed on grains, seeds, roots, fungi, insects, and stored human food. They are adaptable, nocturnal, and capable climbers, which helps them live successfully near people.

Reproduction and life cycle

House mice reproduce quickly and can produce several litters per year, with litter sizes commonly ranging from four to eight young. Wild lifespan is usually short, often around one year.

Relationship with humans

House mice are among the most common commensal rodents and are regarded as pests because they contaminate food and damage structures. They are also important in science as the species from which many laboratory and pet mice were developed.