Daftar spesies mamalia di Jepang

Ini adalah daftar spesies mamalia yang tercatat di Jepang (tidak termasuk populasi peliharaan dan penangkaran ). Dari 172  spesies mamalia yang ditemukan—112 mamalia darat asli (yang endemik diidentifikasi di bawah; jumlah ini mencakup 37 spesies kelelawar), 19 spesies yang diperkenalkan, 40 spesies Setasea, dan duyung —161 terdaftar untuk wilayah Jepang pada Daftar Merah Spesies yang Terancam IUCN : dari jumlah tersebut, tiga taksa terancam punah secara kritis ( tikus-duri muennink, lasiwen yanbaru, dan pungit kelam ), dua puluh dua terancam punah, delapan rentan, dan sebelas hampir terancam ; singa laut Jepang dan sekiwen sturdee dievaluasi sebagai punah . Meskipun pada tingkat global serigala kelabu dinilai sebagai spesies yang paling tidak perlu dikhawatirkan, dua subspesies Jepang, serigala Hokkaido dan serigala Jepang, juga mengalami kepunahan baru-baru ini; Daftar Merah Kementerian Lingkungan Hidup Jepang tahun 2020 juga mencantumkan kalong okinawa dan berang-berang sungai jepang sebagai spesies yang punah, serta subspesies prok-bruk kecil miyako .  

Hingga Januari 2023, demi perlindungan mereka, lima belas spesies dan subspesies telah ditetapkan sebagai spesies terancam punah nasional berdasarkan perintah kabinet sesuai dengan Undang-Undang Konservasi Spesies Flora dan Fauna Liar yang Terancam Punah tahun 1992. 

Tengara berikut digunakan untuk menyoroti status kelestarian setiap spesies sebagaimana dinilai oleh Persatuan Internasional untuk Konservasi Alam :
EX Punah Tidak ada keraguan yang masuk akal bahwa individu terakhir telah meninggal. EW Punah di alam liar Diketahui hanya bertahan hidup di penangkaran atau sebagai (a) populasi yang dinaturalisasi jauh di luar jangkauan sebelumnya. CR Sangat terancam punah Spesies ini menghadapi risiko kepunahan yang sangat tinggi di alam liar. EN Genting Spesies ini menghadapi risiko kepunahan yang sangat tinggi di alam liar. VU Rentan Spesies ini menghadapi risiko kepunahan yang tinggi di alam liar. NT Hampir terancam Spesies ini saat ini tidak memenuhi kriteria CR, EN, atau VU tetapi hampir memenuhi atau kemungkinan akan memenuhinya dalam waktu dekat. LC Risiko rendah Spesies ini telah dievaluasi dan tidak memenuhi kriteria kualifikasi untuk CR, EN, VU, atau NT. DD Data kurang Tidak ada informasi yang memadai untuk menilai risiko kepunahan spesies ini.

 Ordo: Sirenia (lembu laut dan duyung) 

Sirenia merupakan ordo binatang penyusu pemakan tumbuhan air penuh yang mendiami sungai, muara, perairan laut pesisir, rawa, dan lahan basah laut. Keempat spesies tersebut terancam punah.

Famili : Dugongidae
 Marga: Dugong
 Duyung, Dugong dugon   (MOE: CR)( Pulau Okinawa bagian utara; populasi paling utara di dunia;  ditetapkan sebagai Monumen Alam berdasarkan Undang-Undang Perlindungan Properti Budaya  )

 Ordo: Primata 

Ordo Primata mencakup manusia dan kerabat terdekatnya: lemur, lorisoid, monyet, dan kera .

 Subordo: Haplorhini
 Infraordo: Simiiformes
 Perbatasan: Catarrhini
 Superfamili: Cercopithecoidea
 Famili: Cercopithecidae (monyet Dunia Lama)
 Genus: Macaca
 Makaka Jepang, Macaca fuscata  ( Honshu, Shikoku, Kyushū, dan pulau-pulau kecil di sekitarnya; populasi Aomori adalah primata non-manusia paling utara;  beberapa populasi dan/atau habitat terkait telah ditetapkan sebagai Monumen Alam, termasuk yang ada di Semenanjung Shimokita "Database of National Cultural Properties" (in Japanese). Agency for Cultural Affairs. Retrieved 10 May 2021.
Category:CS1 Japanese-language sources (ja) )
 M. f. fuscata
 Kera Yakushima, M.f. yakui
 Makaka batu formosa, Macaca cyclopis  ( spesies yang diperkenalkan ; spesies di Semenanjung Shimokita telah dihilangkan pada tahun 2004  )
 Makaka rhesus, Macaca mulatta  (individu liar diamati di Semenanjung Bōsō di Chiba 

 Hewan pengerat (Rodentia) 
Hewan pengerat merupakan ordo mamalia terbesar, mencakup lebih dari 40% spesies mamalia. Mereka memiliki dua gigi seri di rahang atas dan bawah yang tumbuh terus menerus dan harus dijaga tetap pendek dengan cara menggerogoti. Kebanyakan hewan pengerat berukuran kecil, tetapi kapibara beratnya bisa mencapai  .

 Suborder: Hystricomorpha
 Family: Echimyidae (tikus duri)
 Subfamily: Echimyinae
 Genus: Myocastor
 Tikus biwara, Myocastor coypus (didatangkan dari Amerika Selatan)
 Suborder: Myomorpha
 Family: Cricetidae (hamsters, voles, lemmings, and New World rats and mice)
 Subfamily: Arvicolinae
 Genus: Alexandromys
 Tikus-padang rumput jepang, Alexandromys montebelli (endemic; Honshū, Kyūshū, Sado Island, Notojima)
 Genus: Craseomys
 Tikus-padang punggung-merah kelabu, Craseomys rufocanus (Hokkaidō dan pulau kecil di sekitarnya)
 Tikus-padang pungggung-merah Bedford, C. r. bedfordiae
 Tikus-padang punggung-merah hokkaido, Craseomys rex (Hokkaidō dan pulau kecil di sekitarnya)
 Tikus-padang punggung-merah gunung, C. r. montanus (MOE: NT)(Hokkaidō dan pulau kecil di sekitarnya)
 Tikus-padang punggung-merah rishiri, C. r. rex (MOE: NT)(Pulau Rishiri)
 Tikus-padang punggung-merah jepang, Craseomys andersoni (endemik; Honshū tengah dan utara)
 Tikus-padang punggung-merah smith, Craseomys smithii (endemik; Honshū, Shikoku, Kyūshū)
 Genus: Clethrionomys
 Tikus-padang punggung-merah utara, Clethrionomys rutilus (Hokkaidō)
 C. r. mikado
 Genus: Ondatra
 Tikus kesturi, Ondatra zibethicus (didatangkan dari Amerika Utara)
 Family: Muridae (mice, rats, gerbils, etc.)
 Subfamily: Murinae
 Genus: Apodemus
 Tikus-ladang garis, Apodemus agrarius  (MOE: CR)(Uotsuri Island)
 Tikus-ladang korea, Apodemus peninsulae (Hokkaidō)
 A. p. giliacus
 Tikus-ladang jepang besar, Apodemus speciosus (tersebar luas; tak menghuni Okinawa)
 A. s. ainu
 A. s. speciosus
 Tikus-ladang jepang kecil, Apodemus argenteus (tersebar luas; tak menghuni Okinawa)
 A. a. argenteus
 A. a. hokkaidi
 A. a. yakui
 Genus: Tokudaia
 Tikus-duri muennink, Tokudaia muenninki  (MOE: CR)(endemik Okinawa Island; Natural Monument"Database of National Cultural Properties" (in Japanese). Agency for Cultural Affairs. Retrieved 10 May 2021.
Category:CS1 Japanese-language sources (ja))
 Tikus-duri ryukyu, Tokudaia osimensis  (MOE: EN)(endemik Amami Ōshima; Natural Monument)
 Tikus-duri tokunoshima, Tokudaia tokunoshimensis  (MOE: EN)(endemik Tokunoshima; Natural Monument)
 Genus: Diplothrix
 Tikus-raksasa ekor-panjang ryukyu, Diplothrix legata  (MOE: EN)(endemik Amami Ōshima, Tokunoshima, and Okinawa Island; Natural Monument)
 Genus: Rattus
 Tikus got, Rattus norvegicus (paling banyak ditemui di perkotaan)
 Tikus polinesia, Rattus exulans (didatangkan ke pulau miyako)
 Tikus tanezumi, Rattus tanezumi (paling banyak ditemui di perkotaan)
 Genus: Micromys
 Tikus tuai, Micromys minutus (tidak ditemukan di Hokkaidō, Tōhoku, Okinawa)
 Genus: Mus
 Tikus ryukyu, Mus caroli (Pulau Okinawa)
 Mencit, Mus musculus (tersebar luas)
 Suborder: Sciuromorpha
 Family: Sciuridae (bajing)
 Subfamily: Sciurinae
 Tribe: Sciurini
 Genus: Sciurus
 Bajing merah, Sciurus vulgaris 
 Bajing jepang, Sciurus lis (endemik; Honshū dan Shikoku; tidak ada rekaman terbaru di pulau Kyūshū atau Awaji)
 Tribe: Pteromyini
 Genus: Petaurista
 Tando jepang, Petaurista leucogenys (endemik; Honshū, Shikoku, dan Kyūshū)
 Genus: Pteromys
 Bajing terbang jepang, Pteromys momonga (endemic; Honshū, Shikoku, Kyūshū)
 Siberian flying squirrel, Pteromys volans (found on Hokkaidō, as P. v. orii)
 Ezo flying squirrel, P. v. orii(Hokkaidō)
 Subfamily: Callosciurinae
 Tribe: Callosciurini
 Genus: Callosciurus
 Pallas's squirrel, Callosciurus erythraeus (introduced; naturalized populations from Ibaraki to Miyazaki)
 Subfamily: Xerinae
 Tribe: Marmotini
 Genus: Eutamias
 Siberian chipmunk, Eutamias sibiricus (Hokkaidō and adjacent smaller islands)
 Ezo chipmunk, E. s. lineatus (MOE: DD, as Tamias sibiricus lineatus)
 Family: Gliridae (dormice)
 Subfamily: Glirinae
 Genus: Glirulus
 Japanese dormouse, Glirulus japonicus (endemic; Honshū, Shikoku, Kyūshū, Dōgojima; Natural Monument)

 Ordo: Lagomorpha (kelinci, terwelu, dan pika) 

Lagomorfa terdiri dari dua famili, Leporidae ( terwelu dan kelinci ), dan Ochotonidae ( pika ). Meskipun mereka menyerupai hewan pengerat, dan diklasifikasikan sebagai superfamili dalam ordo tersebut hingga awal abad ke-20, sejak itu mereka dianggap sebagai ordo terpisah. Mereka berbeda dari hewan pengerat dalam sejumlah ciri fisik, seperti memiliki empat gigi seri di rahang atas, bukan dua.

 Famili: Leporidae (kelinci dan arnab)
 Marga: Lepus
 Kelinci Jepang, Lepus brachyurus  (endemik; Honshu, Shikoku, Kyūshū, dan pulau-pulau kecil di sekitarnya)
 Kelinci Kyushu, L. b. brachyurus
 Kelinci oki, L. b. okiensis
 Sado kelinci, L.b. lyoni (MOE: NT)( Pulau Sado )
 Kelinci Tōhoku, L. b. angustidens
 Kelinci gunung, Lepus timidus  ( Hokkaido, Kunashiri, Etorofu )
 , L. t. ainu( Hokkaido )
 Genus: Oryctolagus
 Kelinci Eropa, Oryctolagus cuniculus  (diperkenalkan; liar di tiga belas pulau)
 Genus: Pentalagus
 Kelinci Amami, Pentalagus furnessi   (MOE: EN)(endemik di Amami Ōshima dan Tokunoshima ; Monumen Alam Khusus "Database of National Cultural Properties" (in Japanese). Agency for Cultural Affairs. Retrieved 10 May 2021.
Category:CS1 Japanese-language sources (ja) )
 Famili: Ochotonidae (ikan pikas)
 Genus: Ochotona
 Pika utara, Ochotona hyperborea  
 , O.h. yesoensis (MOE: NT)( Hokkaido )

 Ordo: Eulipotyphla (landak, celurut, dan tikus mondok) 

Eulipotyphlans merupakan mamalia pemakan serangga. Tikus tanah dan solenodon bentuknya mirip tikus, landak susu, gymnure lebih mirip tikus besar, sedangkan tikus tanah merupakan hewan penggali yang berbadan kekar.

 Family: Erinaceidae (hedgehogs and moonrats)
 Subfamily: Erinaceinae
 Genus: Erinaceus
 Amur hedgehog, Erinaceus amurensis (introduced; populations in the Odawara area and on the Izu Peninsula)
 Family: Soricidae (shrews)
 Subfamily: Crocidurinae
 Genus: Crocidura
 Asian lesser white-toothed shrew, Crocidura shantungensis  (MOE: NT)(Tsushima Island)
 Watase's shrew, Crocidura watasei  (MOE: NT)(endemic to the Ryūkyū Islands)
 Dsinezumi shrew, Crocidura dsinezumi (from Hokkaidō to Kagoshima; also Jeju Island)
 C. d. chisai
 C. d. dsinezumi
 C. d. intermedia
 C. d. okinoshimae
 C. d. umbrina
 Orii's shrew, Crocidura orii  (MOE: EN)(endemic to the Amami Islands)
 Genus: Suncus
 House shrew, Suncus murinus (Ryūkyū Islands, Fukue Island, Kyūshū (Nagasaki, Kagoshima))
 S. m. temmincki
 Subfamily: Soricinae
 Tribe: Nectogalini
 Genus: Chimarrogale
 Japanese water shrew, Chimarrogale platycephalus (endemic; Honshū and Kyūshū)
 Tribe: Soricini
 Genus: Sorex
 Slender shrew, Sorex gracillimus (Hokkaidō and adjacent smaller islands)
 Azumi shrew, Sorex hosonoi  (MOE: NT)(endemic; central Honshū)
 Eurasian least shrew, Sorex minutissimus 
 , S. m. hawkeri (MOE: VU)(Hokkaidō, Kenbokki Island, Kunashiri)
 Shinto shrew, Sorex shinto (endemic; subspecies on Honshū, Sado Island, and Shikoku)
 Sado shrew, S. s. sadonis
 Shikoku shrew, S. s. shikokensis (MOE: NT)(Shikoku)
 S. s. shinto
 Laxmann's shrew, Sorex caecutiens (Hokkaidō, Kunashiri)
 S. c. saevus
 Long-clawed shrew, Sorex unguiculatus (Hokkaidō and adjacent smaller islands)
 Family: Talpidae (moles)
 Subfamily: Talpinae
 Tribe: Talpini
 Genus: Euroscaptor
 Japanese mountain mole, Euroscaptor mizura  (MOE: NT)(endemic; Honshū)
 Genus: Mogera
 Small Japanese mole, Mogera imaizumii (endemic; Honshū, Shikoku, and adjacent smaller islands)
 Japanese mole, Mogera wogura (endemic; southern Honshū, Shikoku, Kyūshū, and adjacent smaller islands)
 Echigo mole, Mogera etigo  (MOE: EN)(endemic; Niigata)
 Sado mole, Mogera tokudae  (MOE: NT)(endemic to Sado Island)
 Senkaku mole, Mogera uchidai  (MOE: CR)(endemic to Uotsuri Island)
 Tribe: Urotrichini
 Genus: Urotrichus
 True's shrew mole, Dymecodon pilirostris (endemic; Honshū, Shikoku, Kyūshū)
 Japanese shrew mole, Urotrichus talpoides (endemic; Honshū, Shikoku, Kyūshū, and adjacent smaller islands)

 Ordo: Chiroptera (kelelawar) 

Ciri khas kelelawar yang paling menonjol adalah bahwa kaki depan mereka berkembang menjadi sayap, menjadikan mereka satu-satunya mamalia yang mampu terbang. Spesies kelelawar mencakup sekitar 20% dari semua mamalia.

 Family: Pteropodidae (flying foxes, Old World fruit bats)
 Subfamily: Pteropodinae
 Genus: Pteropus
 Ryukyu flying fox, Pteropus dasymallus (Ryūkyū Islands)
 Daito flying fox, P. d. daitoensis (MOE: CR)(Daitō Islands; Natural Monument"Database of National Cultural Properties" (in Japanese). Agency for Cultural Affairs. Retrieved 10 May 2021.
Category:CS1 Japanese-language sources (ja))
 Erabu flying fox, P. d. dasymallus (MOE: CR)(Ōsumi Islands and Tokara Islands)
 Orii's flying fox, P. d. inopinatus
 Yaeyama flying fox, P. d. yayeyamae
 Okinawa flying fox, Pteropus loochoensis  (MOE: EX)(not found since a C19 record)
 Bonin flying fox, Pteropus pselaphon  (MOE: EN)(endemic to Bonin Islands and Volcano Islands)
 Family: Hipposideridae
 Genus: Hipposideros
 Lesser great leaf-nosed bat, Hipposideros turpis (endemic to Yaeyama Islands)
 Family: Rhinolophidae
 Genus: Rhinolophus
 Greater horseshoe bat, Rhinolophus ferrumequinum (widely distributed)
 Imaizumi's horseshoe bat Rhinolophus imaizumii(endemic)
 Little Japanese horseshoe bat, Rhinolophus cornutus (endemic; widely distributed)
 R. c. cornutus
 Orii's least horseshoe bat, R. c. orii (MOE: EN)(Amami Islands)
 , Rhinolophus pumilus (endemic to Okinawa)
 , R. p. pumilus (MOE: EN)(Okinawa)
 , R. p. miyakonis (MOE: EX)(Miyako Island)
 Yaeyama little horseshoe bat, Rhinolophus perditus  (MOE: VU)(endemic to the Yaeyama Islands)
 Family: Molossidae
 Genus: Tadarida
 East Asian free-tailed bat, Tadarida insignis  (MOE: VU)(not found in Okinawa)
 La Touche's free-tailed bat, Tadarida latouchei  (MOE: DD)(Amami Islands, Kuchinoerabu-jima)
 Family: Miniopteridae
 Genus: Miniopterus
 Eastern bent-wing bat, Miniopterus fuliginosus (Honshū, Shikoku, Kyūshū, and adjacent smaller islands)
 Southeast Asian long-fingered bat, Miniopterus fuscus  (MOE: EN)(endemic to Ryūkyū Islands)
 Family: Vespertilionidae
 Subfamily: Vespertilioninae
 Genus: Eptesicus
 Japanese short-tailed bat, Eptesicus japonensis  (MOE: VU)(endemic; central Honshū)
 Northern bat, Eptesicus nilssoni (Hokkaidō, Kunashiri, Etorofu)
 Genus: Nyctalus
 Birdlike noctule, Nyctalus aviator  (MOE: VU)(widely distributed)
 Japanese noctule, Nyctalus furvus  (MOE: EN)(endemic; central and northern Honshū)
 Genus: Pipistrellus
 Japanese pipistrelle, Pipistrellus abramus (widely distributed)
 Endo's pipistrelle, Pipistrellus endoi  (MOE: VU)(endemic; Honshū and Shikoku)
 Sturdee's pipistrelle, Pipistrellus sturdeei  (MOE: EX)(endemic; not found since the type specimen was collected on Hahajima in 1915)
 Genus: Barbastella
 Asian barbastelle, Barbastella leucomelas 
 Eastern barbastelle, B. l. darielingensis(Hokkaidō, Kunashiri, Honshū and Shikoku)
 Genus: Plecotus
 Japanese long-eared bat, Plecotus sacrimontis (endemic; not found in Okinawa)
 Genus: Hypsugo
 Alashanian pipistrelle, Hypsugo alaschanicus  (MOE: DD)(found in Hokkaidō and Aomori, and on Tsushima Island)
 Savi's pipistrelle, Hypsugo savii 
 Genus: Vespertilio
 Particoloured bat, Vespertilio murinus  (MOE: DD)(found in Hokkaidō, Aomori, and Ishikawa)
 Asian particoloured bat, Vespertilio sinensis (widely distributed; not found in Okinawa)
 Subfamily: Myotinae
 Genus: Myotis
 Reddish-black myotis, Myotis rufoniger  (MOE: CR) (as Hodgson's bat, Myotis formosus)(found on Tsushima)
 Fraternal myotis, Myotis frater (north from Gifu)
 Ussuri whiskered bat, Myotis gracilis  (as Siberian bat Myotis sibiricus) (MOE: VU)(Hokkaidō, Kunashiri, Etorofu)
 Ikonnikov's bat, Myotis ikonnikovi (Hokkaidō, Kunashiri, Honshū)
 M. i. hosonoi
 M. i. ikonnikovi
 Big-footed myotis, Myotis macrodactylus (widely distributed)
 Far Eastern myotis, Myotis bombinus  (MOE: VU) (as Myotis nattereri bombinus)(widely distributed; not found in Okinawa)
 Eastern water bat, Myotis petax (Hokkaidō, Kunashiri, Etorofu)
 Frosted myotis, Myotis pruinosus  (MOE: VU)(endemic; Honshū, Shikoku, Kyūshū)
 Yanbaru whiskered bat, Myotis yanbarensis  (MOE: CR)(endemic to Ryūkyū Islands)
 Subfamily: Murininae
 Genus: Murina
 Hilgendorf's tube-nosed bat, Murina hilgendorfi (widely distributed; not found in Okinawa)
 Ryukyu tube-nosed bat, Murina ryukyuana  (MOE: EN)(endemic to Ryūkyū Islands)
 Gloomy tube-nosed bat, Murina tenebrosa  (MOE: DD)(endemic; not found since the type specimen was collected on Tsushima Island in 1962)
 Ussuri tube-nosed bat, Murina ussuriensis (widely distributed; not found in Okinawa)

 Ordo: Karnivora 

Ada lebih dari 260 spesies karnivora, yang sebagian besar memakan daging. Mereka memiliki bentuk tengkorak dan gigi yang khas. Serigala dan berang-berang kini diyakini telah punah di Jepang.

 Suborder: Feliformia
 Family: Felidae (cats)
 Subfamily: Felinae
 Genus: Prionailurus
 Leopard cat, Prionailurus bengalensis 
  P. b. euptilurus, two populations:
 Tsushima leopard cat [ja] (MOE: CR)(Tsushima Island; Natural Monument"Database of National Cultural Properties" (in Japanese). Agency for Cultural Affairs. Retrieved 10 May 2021.
Category:CS1 Japanese-language sources (ja))
 Iriomote cat (MOE: CR)(Iriomote; Special Natural Monument)
 Genus: Lynx
 Eurasian lynx, Lynx lynx  extirpated in prehistory
 Subfamily: Pantherinae
 Genus: Panthera
 Leopard, Panthera pardus  extirpated in prehistory
 Tiger, Panthera tigris  extirpated in prehistory
 Family: Viverridae (civets)
 Genus: Paguma
 Masked palm civet, Paguma larvata (introduced; Honshū, Shikoku, Kyūshū, Ryukyu)
 Family: Herpestidae
 Genus: Urva
 Small Indian mongoose, Urva auropunctata (introduced on Okinawa Island and Amami Ōshima and in areas of the cities of Satsumasendai and Kagoshima)
 Suborder: Caniformia
 Family: Canidae (dogs, foxes)
 Genus: Vulpes
 Red fox, Vulpes vulpes 
 , V. v. japonica(Honshū, Shikoku, Kyūshū)
 Ezo red fox, V. v. schrencki(Hokkaidō)
 Genus: Nyctereutes
 Japanese raccoon dog, Nyctereutes viverrinus (endemic; Honshū, Shikoku, Kyūshū, and adjacent smaller islands; tanuki habitat in Yamaguchi is a Natural Monument)
 , N. v. albus(Hokkaidō, Okushiri Island)
 N. v. viverrinus
 Genus: Canis
 Grey wolf, Canis lupus  extirpated
 Hokkaido wolf, C. l. hattai (Hokkaidō)
 Japanese wolf, C. l. hodophilax (Honshū, Shikoku, Kyūshū)
 Family: Ursidae (bears)
 Genus: Ursus
 Brown bear, Ursus arctos 
 Ussuri brown bear, U. a. lasiotus(Hokkaidō, Kunashiri, Etorofu)
 Asiatic black bear, Ursus thibetanus 
 Japanese black bear, U. t. japonicus(Honshū and Shikoku, formerly also Kyūshū)
 Family: Procyonidae (raccoons)
 Genus: Procyon
 Raccoon, Procyon lotor (introduced from the Americas)
 Family: Mustelidae (mustelids)
 Genus: Meles
 Japanese badger, Meles anakuma (endemic; Honshū, Shikoku, Kyūshū)
 Genus: Enhydra
 Sea otter, Enhydra lutris  (MOE: CR)(eastern Hokkaidō)
 Genus: Lutra
 Eurasian otter, Lutra lutra  (Tsushima Island)
 Japanese river otter, L. l. nippon(MOE: EX)(last recorded on Honshū in 1954 and in Kōchi in 1979)
 Hokkaido river otter, L. l. whiteleyi(MOE: EX)
 Genus: Martes
 Japanese marten, Martes melampus (endemic; Honshū, Shikoku, Kyūshū)
 M. m. melampus
 , M. m. tsuensis (MOE: NT)(endemic; Tsushima Island; Natural Monument)
 Sable, Martes zibellina 
 , M. z. brachyura (MOE: EN)(Hokkaidō)
 Genus: Mustela
 Stoat, Mustela erminea 
 , M. e. nippon (MOE: NT)(central and northern Honshū)
 , M. e. orientalis (MOE: NT)(Hokkaidō)
 Japanese weasel, Mustela itatsi (endemic to Honshū, Shikoku, Kyūshū, and adjacent smaller islands; introduced to Hokkaidō, Rishiri Island, Rebun Island, Ryūkyū Islands, etc., for rat control)
 M. i. itatsi
 Yakushima weasel, M. i. sho
 Siberian weasel, Mustela sibirica  (MOE: EN)(native on Tsushima Island, introduced to western Japan)
 M. s. coreana(Tsushima Island)
 Least weasel, Mustela nivalis 
 , M. n. namiyei (MOE: NT)(Tōhoku)
 , M. n. nivalis(Hokkaidō)
 Genus: Neogale
 American mink, Neogale vison (introduced; Hokkaidō, Nagano, Fukushima; records from elsewhere in Honshū and Kyūshū)
 Family: Otariidae (eared seals, sealions)
 Genus: Callorhinus
 Northern fur seal, Callorhinus ursinus (northern Japan)
 Genus: Eumetopias
 Steller sea lion, Eumetopias jubatus  (MOE: NT)
 Western Steller sea lion, E. j. jubatus (Hokkaidō and Shimokita Peninsula)
 Genus: Zalophus
 Japanese sea lion, Zalophus japonicus  (MOE: CR)(last recorded on Takeshima in 1975)
 Family: Phocidae (earless seals)
 Genus: Erignathus
 Bearded seal, Erignathus barbatus (Hokkaidō and vagrant)
 Pacific bearded seal, E. b. nauticus (vagrant)
 Genus: Histriophoca
 Ribbon seal, Histriophoca fasciata (northeast Hokkaidō)
 Genus: Mirounga
 Northern elephant seal, Mirounga angustirostris (vagrant)
 Genus: Phoca
 Spotted seal, Phoca largha (Hokkaidō)
 Harbour seal, Phoca vitulina  (MOE: NT)(Hokkaidō)
 Kuril seal, P. v. stejnegeri (eastern Hokkaidō)
 Genus: Pusa
 Ringed seal, Pusa hispida (especially northern Hokkaidō)

 Ordo: Artiodactyla (hewan berkuku genap) 

Ungulata berjari genap adalah ungulata yang berat badannya ditanggung secara seimbang oleh jari kaki ketiga dan keempat, dan bukan sebagian besar atau sepenuhnya ditanggung oleh jari kaki ketiga seperti pada perissodactyl . Ada sekitar 220 spesies artiodactyl darat, termasuk banyak yang memiliki kepentingan ekonomi besar bagi manusia. Artiodactyla juga mencakup infraordo Cetacea, yang meliputi paus, lumba-lumba, dan pesut. Cetacea merupakan mamalia yang paling mampu beradaptasi dengan kehidupan akuatik, dengan tubuh berbentuk gelendong dan hampir tidak berbulu, dilindungi oleh lapisan lemak tebal, serta kaki depan dan ekor yang dimodifikasi untuk memberikan tenaga penggerak di bawah air.

 Family: Suidae (pigs)
 Subfamily: Suinae
 Genus: Sus
 Wild boar, Sus scrofa 
 Japanese boar, S. s. leucomystax(Honshū south from Fukushima, Shikoku, Kyūshū, Awaji Island)
  S. s. riukiuanus(Ryūkyū Islands; half as massive as Sus scrofa leucomystax)
 Family: Cervidae (deer)
 Subfamily: Cervinae
 Genus: Muntiacus
 Reeves's muntjac, Muntiacus reevesi (introduced; southern Chiba and Izu Ōshima)
 Genus: Rusa
 Sambar deer, Rusa unicolor 
 Bonin sambar, R. u. boninensis(EX)
 Genus: Cervus
 Sika deer, Cervus nippon (widely distributed; Kerama deer and their habitat, and the deer of Nara, are Natural Monuments"Database of National Cultural Properties" (in Japanese). Agency for Cultural Affairs. Retrieved 10 May 2021.
Category:CS1 Japanese-language sources (ja))
 Northern Honshu sika deer, C. n. aplodontus
 Honshu sika deer, C. n. centralis
 Kerama deer, C. n. keramae
 Mageshima deer, C. n. mageshimae
 C. n. nippon
 Tsushima deer, C. n. pulchellus
 , C. n. yakushimae
 Yezo sika deer, C. n. yesoensis
 Family: Bovidae (cattle, antelope, sheep, goats)
 Subfamily: Caprinae
 Genus: Capricornis
 Japanese serow, Capricornis crispus (endemic; Honshū, Shikoku, Kyūshū; Special Natural Monument)
 Infraorder: Cetacea
 Parvorder: Mysticeti
 Family: Balaenidae
 Genus: Eubalaena
 North Pacific right whale, Eubalaena japonica 
 Family: Balaenopteridae
 Subfamily: Balaenopterinae
 Genus: Balaenoptera
 Common minke whale, Balaenoptera acutorostrata 
 Sei whale, Balaenoptera borealis 
 Bryde's whale, Balaenoptera edeni 
 Omura's whale, Balaenoptera omurai 
 Blue whale, Balaenoptera musculus (no recent records in neighbouring waters)
 Fin whale, Balaenoptera physalus 
 Subfamily: Megapterinae
 Genus: Megaptera
 Humpback whale, Megaptera novaeangliae (regular sightings in the Ogasawara Islands and Okinawa)
 Family: Eschrichtiidae
 Genus: Eschrichtius
 Grey whale, Eschrichtius robustus (occasional sightings of western subpopulation )
 Parvorder: Odontoceti
 Superfamily: Platanistoidea
 Family: Monodontidae
 Genus: Delphinapterus
 Beluga, Delphinapterus leucas  vagrant
 Family: Phocoenidae
 Genus: Neophocaena
 Narrow-ridged finless porpoise, Neophocaena asiaeorientalis 
 Genus: Phocoena
 Harbour porpoise, Phocoena phocoena 
 Genus: Phocoenoides
 Dall's porpoise, Phocoenoides dalli 
 Family: Physeteridae
 Genus: Physeter
 Sperm whale, Physeter macrocephalus 
 Family: Kogiidae
 Genus: Kogia
 Pygmy sperm whale, Kogia breviceps 
 Dwarf sperm whale, Kogia sima 
 Family: Ziphidae
 Genus: Ziphius
 Cuvier's beaked whale, Ziphius cavirostris 
 Genus: Berardius
 Baird's beaked whale, Berardius bairdii 
 Sato's beaked whale, Berardius minimus 
 Subfamily: Hyperoodontinae
 Genus: Indopacetus
 Indo-Pacific beaked whale, Indopacetus pacificus 
 Genus: Mesoplodon
 Hubbs' beaked whale, Mesoplodon carlhubbsi 
 Blainville's beaked whale, Mesoplodon densirostris *
 Ginkgo-toothed beaked whale, Mesoplodon ginkgodens 
 Stejneger's beaked whale, Mesoplodon stejnegeri 
 Family: Delphinidae (marine dolphins)
 Genus: Steno
 Rough-toothed dolphin, Steno bredanensis 
 Genus: Tursiops
 Indo-Pacific bottlenose dolphin, Tursiops aduncus 
 Common bottlenose dolphin, Tursiops truncatus 
 Genus: Stenella
 Pantropical spotted dolphin, Stenella attenuata 
 Striped dolphin, Stenella coeruleoalba 
 Spinner dolphin, Stenella longirostris (common around the Ogasawara Islands)
 Genus: Delphinus
 Long-beaked common dolphin, Delphinus capensis 
 Short-beaked common dolphin, Delphinus delphis 
 Genus: Lagenodelphis
 Fraser's dolphin, Lagenodelphis hosei 
 Genus: Sagmatias
 Pacific white-sided dolphin, Sagmatias obliquidens 
 Genus: Lissodelphis
 Northern right whale dolphin, Lissodelphis borealis 
 Genus: Grampus
 Risso's dolphin, Grampus griseus 
 Genus: Peponocephala
 Melon-headed whale, Peponocephala electra 
 Genus: Feresa
 Pygmy killer whale, Feresa attenuata 
 Genus: Pseudorca
 False killer whale, Pseudorca crassidens 
 Genus: Orcinus
 Orca, Orcinus orca 
 Genus: Globicephala
 Short-finned pilot whale, Globicephala macrorhynchus 

 Referensi 

Kategori:Mamalia Jepang