List of mammals of Great Britain

Order: Diprotodontia Although marsupials are primarily found in the Australian region, the red-necked wallaby has been introduced to parts of Great Britain.

Feral populations breed on the island of Inchconnachan on Loch Lomond in Argyll and Bute, Scotland, and on the Isle of Man.

Other colonies have existed in Devon, the Peak District, and the Ashdown Forest in East Sussex, and although these are now believed to be locally extinct, occasional sightings continue.

They are characterised by a single pair of continuously growing incisors in each of the upper and lower jaws and are native to almost all major landmasses on Earth.

They are the mammals most fully adapted to aquatic life: they have a spindle-shaped, nearly hairless body, protected by a thick layer of blubber, and forelimbs and tail modified to provide propulsion underwater.