Europe and northern Asia. It is native to Great Britain but not to
Ireland, where it has been accidentally introduced, and has now
colonised much of the south and southwest; concerns have recently been
expressed that it may be replacing the native wood mouse.
Lives in woodland, hedgerows and dense vegetation such as bracken. Its
underground chamber is lined with moss, feathers and vegetable fibre
and contains a store of food.
It can live for 18 months and is omnivorous, eating insects, leaves and fruits.