• Source: List of mammals of Ireland

There are 27 mammal species native to Ireland or naturalised in both the Republic of Ireland and Northern Ireland before 1500. The Red List of Irish terrestrial mammals was updated in 2019, with assessments of these 27 species. One species is locally extinct, one is vulnerable and 25 are least concern species. Not assessed were nine mammal species that were introduced after 1500.
The following tags are used to highlight each species' conservation status as assessed on the IUCN Red List:

NE indicates not endemic




Order: Diprotodontia (kangaroos, wallabies, wombats and allies)


Though most marsupials make up a great part of the fauna in the Australian region, the red-necked wallaby has been introduced to Ireland: a population is currently breeding on Lambay island.

Family: Macropodidae (kangaroos, wallabies, and kin)
Genus: Notamacropus
Red-necked wallaby, N. rufogriseus EN NE introduced




Order: Rodentia (rodents)



Rodents make up the largest order of mammals, with over 40% of mammalian species. They have two incisors in the upper and lower jaw which grow continually and must be kept short by gnawing.

Suborder: Sciurognathi
Family: Sciuridae (squirrels)
Subfamily: Sciurinae
Genus: Sciurus
Eastern grey squirrel, Sciurus carolinensis NE introduced
Red squirrel, Sciurus vulgaris LC
Family: Cricetidae
Subfamily: Arvicolinae
Genus: Clethrionomys
Bank vole, Clethrionomys glareolus NE introduced
Family: Cricetidae
Subfamily: Arvicolinae
Genus: Microtus
field vole, Microtus agrestis NE introduced
Family: Muridae (mice, rats, etc.)
Subfamily: Murinae
Genus: Apodemus
Wood mouse, Apodemus sylvaticus LC
Genus: Mus
House mouse, Mus musculus LC
Genus: Rattus
Brown rat, Rattus norvegicus NE introduced
Black rat, Rattus rattus LC naturalised
Family: Gliridae
Subfamily: Leithiinae
Genus: Muscardinus
Hazel dormouse, M. avellanarius LC introduced
Suborder: Hystricomorpha
Family: Echimyidae (neotropical spiny rats)
Subfamily: Echimyinae
Genus: Myocastor
Coypu, M. coypus LC introduced




Order: Lagomorpha (lagomorphs)



The lagomorphs comprise two families, Leporidae (hares and rabbits), and Ochotonidae (pikas). Though they can resemble rodents, and were classified as a superfamily in that order until the early 20th century, they have since been considered a separate order. They differ from rodents in a number of physical characteristics, such as having four incisors in the upper jaw rather than two.

Family: Leporidae (rabbits, hares)
Genus: Lepus
European hare, Lepus europaeus NE introduced
Mountain hare, Lepus timidus LC
Genus: Oryctolagus
European rabbit, Oryctolagus cuniculus NT naturalised




Order: Erinaceomorpha (hedgehogs and gymnures)



The order Erinaceomorpha contains a single family, Erinaceidae, which comprise the hedgehogs and gymnures. The hedgehogs are easily recognised by their spines while gymnures look more like large rats.

Family: Erinaceidae (hedgehogs)
Subfamily: Erinaceinae
Genus: Erinaceus
West European hedgehog, Erinaceus europaeus LC




Order: Soricomorpha (shrews, moles, and solenodons)



The "shrew-forms" are insectivorous mammals. The shrews and solenodons closely resemble mice while the moles are stout-bodied burrowers.

Family: Soricidae (shrews)
Subfamily: Soricinae
Genus: Crocidura
Greater white-toothed shrew, Crocidura russula NE introduced
Genus: Sorex
Eurasian pygmy shrew, Sorex minutus LC




Order: Chiroptera (bats)



The bats' most distinguishing feature is that their forelimbs are developed as wings, making them the only mammals capable of flight. Bat species account for about 20% of all mammals.

Family: Vespertilionidae
Subfamily: Myotinae
Genus: Myotis
Daubenton's bat, Myotis daubentonii LC
Whiskered bat, Myotis mystacinus LC
Natterer's bat, Myotis nattereri LC
Subfamily: Vespertilioninae
Genus: Nyctalus
Lesser noctule, Nyctalus leisleri LC
Genus: Pipistrellus
Nathusius' pipistrelle, Pipistrellus nathusii LC
Common pipistrelle, Pipistrellus pipistrellus LC
Soprano pipistrelle, Pipistrellus pygmaeus LC
Genus: Plecotus
Brown long-eared bat, Plecotus auritus LC
Family: Rhinolophidae
Subfamily: Rhinolophinae
Genus: Rhinolophus
Lesser horseshoe bat, Rhinolophus hipposideros LC




Order: Cetacea (whales)



The order Cetacea includes whales, dolphins, and porpoises. They are the mammals most fully adapted to aquatic life with a spindle-shaped nearly hairless body, protected by a thick layer of blubber, and forelimbs and tail modified to provide propulsion underwater.

Suborder: Mysticeti
Family: Balaenidae
Genus: Balaena
Bowhead whale, B. mysticetus EN vagrant
Genus: Eubalaena
North Atlantic right whale, E. glacialis CR presence uncertain confirmed 2024
Family: Balaenopteridae (rorqual)
Subfamily: Balaenopterinae
Genus: Balaenoptera
Common minke whale, Balaenoptera acutorostrata LC
Sei whale, Balaenoptera borealis EN
Fin whale, Balaenoptera physalus VU
Blue whale, B. musculus EN
Family: Megapterinae
Genus: Megaptera
Humpback whale, Megaptera novaeangliae LC
Suborder: Odontoceti
Family: Phocoenidae (porpoises)
Genus: Phocoena
Harbour porpoise, Phocoena phocoena LC
Family: Ziphidae (beaked whales)
Genus: Ziphius
Cuvier's beaked whale, Ziphius cavirostris DD
Subfamily: Hyperoodontinae
Genus: Hyperoodon
Northern bottlenose whale, Hyperoodon ampullatus NT
Genus: Mesoplodon
Sowerby's beaked whale, Mesoplodon bidens DD
Gervais' beaked whale, Mesoplodon europaeus DD
True's beaked whale, Mesoplodon mirus DD
Family: Delphinidae (marine dolphins)
Genus: Lagenorhynchus
White-beaked dolphin, Lagenorhynchus albirostris LC
Genus: Leucopleurus
Atlantic white-sided dolphin, Leucopleurus acutus LC
Genus: Delphinus
Common dolphin, Delphinus delphis LC
Genus: Tursiops
Common bottlenose dolphin, Tursiops truncatus LC
Genus: Stenella
Striped dolphin, Stenella coeruleoalba LC
Genus: Grampus
Risso's dolphin, Grampus griseus LC
Genus: Globicephala
Long-finned pilot whale, Globicephala melas LC
Genus: Pseudorca
False killer whale, Pseudorca crassidens DD
Family: Physeteridae (sperm whales)
Genus: Physeter
Sperm whale, Physeter macrocephalus VU
Family: Kogiidae
Genus: Kogia
Pygmy sperm whale, Kogia breviceps DD
Superfamily: Platanistoidea
Family: Monodontidae (narwhals)
Genus: Delphinapterus
Beluga, Delphinapterus leucas LC vagrant
Genus: Orcinus
Orca, Orcinus orca DD




Order: Carnivora (carnivorans)



Carnivorans include over 260 species, the majority of which eat meat as their primary dietary item. They have a characteristic skull shape and dentition.

Suborder: Caniformia
Family: Canidae (dogs, foxes)
Genus: Vulpes
Red fox, Vulpes vulpes LC
Family: Mustelidae (mustelids)
Genus: Lutra
European otter, Lutra lutra NT
Genus: Martes
European pine marten, Martes martes LC
Genus: Meles
European badger, Meles meles LC
Genus: Mustela
Stoat, Mustela erminea LC
Genus: Neogale
American mink, Neogale vison NE introduced
Family: Phocidae (earless seals)
Genus: Halichoerus
Grey seal, Halichoerus grypus LC
Genus: Phoca
Common seal, Phoca vitulina LC
Genus: Cystophora
Hooded seal, C. cristatus VU vagrant
Genus: Erignathus
Bearded seal, E. barbatus LC vagrant
Genus: Pagophilus
Harp seal, P. groenlandicus LC vagrant
Genus: Pusa
Ringed seal, P. hispida LC vagrant
Family: Odobenidae (walruses)
Genus: Odobenus
Walrus, O. rosmarus VU presence uncertain, vagrant




Order: Artiodactyla (even-toed ungulates)



The even-toed ungulates are ungulates whose weight is borne about equally by the third and fourth toes, rather than mostly or entirely by the third as in perissodactyls. There are about 220 artiodactyl species, including many that are of great economic importance to humans.

Family: Cervidae (deer)
Subfamily: Cervinae
Genus: Cervus
Red deer, Cervus elaphus LC
Sika deer, Cervus nippon NE introduced
Genus: Dama
European fallow deer, Dama dama LC naturalised
Subfamily: Capreolinae
Genus: Capreolus
Roe deer, C. capreolus LC introduced
Genus: Muntiacus
Reeves's muntjac, M. reevesi LC introduced




Locally extinct


The following species are locally extinct in the country:

Wolf, Canis lupus, see Wolves in Ireland
Eurasian lynx, Lynx lynx
Reindeer, Rangifer tarandus
Wild boar, Sus scrofa
Brown bear, Ursus arctos, see Bears in Ireland




Comparison with Great Britain


The following species are found in Great Britain but not in Ireland:

Common vole, M. arvalis
Water vole, Arvicola terrestris
Harvest mouse, Micromys minutus
Yellow-necked mouse, A. flavicollis
Edible dormouse, Glis glis
European mole, Talpa europaea
Common shrew, Sorex araneus
Eurasian water shrew, Neomys fodiens
Lesser white-toothed shrew, Crocidura suaveolens
Greater horseshoe bat, Rhinolophus ferrumequinum
Greater mouse-eared bat, Myotis myotis
Bechstein's bat, M. bechsteini
Parti-coloured bat, Vespertilio murinus
Serotine bat, Eptesicus serotinus
Northern bat, E. nilssoni
Common noctule, Nyctalus noctula
Barbastelle, Barbastella barbastellus
Grey long-eared bat, Plecotus austriacus
Least weasel, Mustela nivalis
European polecat, M. putorius
European wildcat, Felis silvestris
Wild boar, Sus scrofa
Water deer, Hydropotes inermis introduced c. 1896
Eurasian beaver, Castor fiber reintroduced 2009




See also


List of chordate orders
Lists of mammals by region
Mammal classification
Fauna of Ireland
Deer of Ireland
Wolves in Ireland
Bears in Ireland




References






External links


"Marnell, F., Kingston, N. & Looney, D. (2009) Ireland Red List No. 3: Terrestrial Mammals, National Parks and Wildlife Service, Department of the Environment, Heritage and Local Government, Dublin, Ireland" (PDF). National Parks and Wildlife Service, Department of the Environment, Heritage and Local Government,Dublin, Ireland. 2009. Retrieved 6 June 2010.
"Animal Diversity Web". University of Michigan Museum of Zoology. 1995–2006. Retrieved 22 May 2007.
Smiddy, P. 1999 Re-assessment of the Irish records of ringed, harp and hooded seals. Irish Naturalists' Journal 26: 249-250
Ulster Museum Northern Ireland Mammals, Amphibians and Reptiles. Includes more extinct mammals.
NPWS Breeding populations of Grey seals in the Republic of Ireland
Irish Whale and Dolphin Group
After 5,000 years, Kerry red deer as Irish as can be, DNA analysis shows
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Species Profile Browser · Species Profile

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• List of mammals of Ireland
• List of mammals of Great Britain
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• List of mammals of Europe
• Fauna of Ireland
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