Mice can cause all sorts of problems, including damage to your floorboards and eating your food. If you have a mice problem, it's important to identify if it's just one mouse or an infestation

Mice
Mice are believed to have arrived from Russia, although evidence of them has been found in Iron Age deposits possibly arriving in Britain around 10th century BC.  They are common throughout Britain and found living in rural and urban environments.  Mice do not always live outside throughout the whole of the year as they suffer with hypothermia as they have a large outside body area and small internal area.  Mice do not like getting wet and will not live in sewers.

 

Mice are also omnivores and feed on whatever they find in their present environment; feeding on plant matter, seeds in hedges to food in our houses.  Mice are sporadic feeders.  Domestic properties when occupied with mice will require proofing to prevent reinfestation.  Mice are also incontinent and spread bacteria and germs over the area they occur.
 

Other kinds of mice include: Wood Mouse or Long Tailed Field Mouse (Apodemus sylvatious), the Yellow Necked Field Mouse (Apodemus flavicollus), Harvest Mouse (Micromus minutas), House Mouse (Musculus domesticus).

Mouse
Photo credit: Jensbn~common
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Rats and mice do not pair bond.  Mating is on an opportunistic and promiscuous basis.  Both rats and mice will mate and conceive shortly after giving birth even whilst still suckling young, giving rise to high population peaks in a short period of time but only when food is plentiful for the young to survive.

Breeding Activity Table for Rats and Mice