Deliberately introduced to this country sometime in the 19th century the grey squirrel has since spread throughout most of mainland England and Wales. Mainly a resident of broadleaved and mixed woodlands it is also a common resident of urban parks and gardens.
They frequently enter domestic roof spaces. Once inside they chew woodwork, strip insulation from electrical wiring and water pipes, tear up fibreglass insulation and, occasionally, drown in water tanks.
Closely resembles the Housefly, but this fellow bites. Uncommon indoors but breeds in long grass, straw or grass cuttings where there are horses or other animals.
A favourite media term. These rodents are generally described as resistant to all known poisons, larger, more voracious and generally more intelligent than their controllable relatives.
In reality, tolerance of some anti-coagulant rodenticides does exist in both rats and mice but does not, as yet, present a serious problem in control.