List of mammals of Great Britain information

This is a list of mammals of Great Britain. The diversity of mammal fauna of Great Britain is somewhat impoverished compared to that of Continental Europe, due to the short period of time between the last ice age and the flooding of the land bridge between Great Britain and the rest of Europe. Only those land species which crossed before the creation of the English Channel and those introduced by humans exist in Great Britain.

Native (usually synonymous with "indigenous") species are considered to be species which are today present in the region in question, and have been continuously present in that region since a certain period of time. When applied to Great Britain, three possible definitions of this time constraint are:

a species that colonised the islands during the glacial retreat at the end of the last ice age (c. 9500 years ago);
a species that was present when the English Channel was created (c. 8000 years ago); or,
a species that was present in prehistory.

This list includes mammals from the small islands around Great Britain and the Channel Islands. There are no endemic mammal species in Great Britain, although four distinct subspecies of rodents have arisen on small islands.

The following tags are used to highlight the conservation status of each species' British population, as assessed by Natural England and The Mammal Society in a Regional Red List, following the criteria of the International Union for Conservation of Nature.

EX	Extinct	No reasonable doubt that the last individual has died.
EW	Extinct in the wild	Known only to survive in captivity or as a naturalised population well outside its previous range.
CR	Critically endangered	The species is in imminent risk of extinction in the wild.
EN	Endangered	The species is facing an extremely high risk of extinction in the wild.
VU	Vulnerable	The species is facing a high risk of extinction in the wild.
NT	Near threatened	The species does not meet any of the criteria that would categorise it as risking extinction but it is likely to in the future.
LC	Least concern	There are no current identifiable risks to the species.
DD	Data deficient	There is inadequate information to make an assessment of the risks to this species.

List of mammals of Great Britain information

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