Rodentia

A native vole affected by habitat change and introduced American mink.

Ondatra zibethicus, a rodent introduced to Britain through fur farming and subsequently eradicated.

Myocastor coypus, a South American rodent whose escaped populations were the subject of an eradication campaign in Britain.

Sciurus vulgaris, whose regional decline or recovery can reflect habitat, competitors, pathogens and predators.

Sciurus carolinensis, native to North America and introduced to Britain and Ireland. Its effects can include competition and pathogen-mediated impacts.

A rodent of the genus Castor, capable of substantial habitat modification. Native regional presence and modern reintroduction require separate evidence.