Galea, Galemys, Galenomys, Galerella, Galictis, Galidia, Galidictis, Gazella, Genetta, Geocapromys, Geogale, Geomys, Georychus, Geoxus, Gerbillurus, Gerbillus, Girafe, Glaucomys, Glironia, Glirulus, Glischropus, Globicephala, Glossophaga , Glyphotes, Golunda, Gorilla, Gracilinanus, Grammomys, Grampus, Graomys, Graphiurus, Gulo, Gymnobelideus, Gymnuromys,
Felis, Felovia, Feresa, Feroculus, Fossa, Funambulus, Funisciurus, Furipterus,
Ia, Ichneumia, Ichthyomys, Ictonyx, Idionycteris, Idiurus, Indopacetus, Indri, Iomys, Irenomys, Isolobodon, Isoodon, Isothrix, Isthmomys,
Habromys, Hadromys, Haeromys, Halichoerus, Hapalemur, Hapalomys, Haplonycteris, Harpiocephalus, Harpyionycteris, Heimyscus, Helarctos, Heliophobius, Heliosciurus, Helogale, Hemibelideus, Hemicentetes, Hemiechinus, Hemigalus, Hemitragus, Herpailurus, Herpestes, Hesperoptenus, Heterocephalus, Heterohyrax, Heteromys, Heteropsomys, Hexaprotodon, Hexolobodon, Hippocamelus, Hippopotamus, Hipposideros , Hippotragus, Histiotus, Histriophoca, Hodomys, Holochilus, Homo, Hoplomys, Hyaena, Hybomys, Hydrictis, Hydrochaeris, Hydrodamalis , Hydromys, Hydropotes, Hydrurga, Hyemoschus, Hylobates, Hylochoerus, Hylonycteris , Hylomys, Hylomyscus, Hylopetes, Hyomys, Hyosciurus, Hyperacrius, Hyperoodon, Hypogeomys, Hypsignathus, Hypsiprymnodon, Hystrix,
Kadarsanomys, Kannabateomys, Kerivoula, Kerodon, Kobus, Kogia, Komodomys, Kunsia,
Jaculus, Juscelinomys, jaguar
Macaca, Macroderma, Macrogalidia, Macroglossus, Macrophyllum , Macropus, Macroscelides, Macrotarsomys, Macrotis, Macrotus , Macruromys, Madoqua, Makalata, Malacomys, Malacothrix, Mallomys, Mandrillus, Manis, Margaretamys, Marmosa, Marmosops, Marmota, Martes, Massoutiera, Mastomys, Maxomys, Mayermys, Mazama, Megadendromus, Megaderma, Megadontomys, Megaerops, Megaloglossus, Megalomys, Megaptera, Megasorex, Melanomys, Melasmothrix, Meles, Mellivora, Melogale, Melomys, Melonycteris, Melursus, Menetes, Mephitis, Meriones, Mesechinus, Mesembriomys, Mesocapromys, Mesocricetus, Mesomys, Mesophylla , Mesoplodon, Metachirus, Micoureus, Microcavia, Microcebus, Microdillus, Microdipodops, Microgale, Microhydromys, Micromys, Micronycteris , Microperoryctes, Micropotamogale, Micropteropus, Microryzomys, Microsciurus, Microtus, Millardia, Mimetillus, Mimon , Miniopterus, Miopithecus, Mirounga, Mogera, Molossops, Molossus, Monachus, Monodelphis, Monodon, Monophyllus , Mops, Mormoops, Mormopterus, Moschiola, Moschus, Mosia, Mungos, Mungotictis, Muntiacus, Murexia, Muriculus, Murina, Mus, Muscardinus, Musonycteris , Mustela, Mydaus, Mylomys, Myocastor, Myoictis, Myomimus, Myomys, Myonycteris, Myoprocta, Myopterus, Myopus, Myosciurus, Myosorex, Myospalax, Myotis, Myoxinae, Myoxus, Myrmecobius, Myrmecophaga, Mysateles, Mystacina, Mystromys, Myzopoda,
Laephotis, Lagenodelphis, Lagenorhynchus, Lagidium, Lagorchestes, Lagostomus, Lagostrophus, Lagothrix, Lagurus, Lama, Lamottemys, Lariscus, Lasionycteris, Lasiopodomys, Lasiorhinus, Lasiurus, Latidens, Lavia, Leggadina, Leimacomys, Leithiinae, Lemmiscus, Lemmus, Lemniscomys, Lemur, Lenomys, Lenothrix, Lenoxus, Leontopithecus, Leopardus, Leopoldamys, Lepilemur, Leporillus, Leptailurus, Leptomys, Leptonychotes, Leptonycteris , Lepus, 'Lestodelphys, Lestoros, Liberiictis, Lichonycteris , Limnogale, Limnomys, Liomys, Lionycteris , Lissodelphis, Litocranius, Lobodon, Lonchophylla , Lonchorhina , Lonchothrix, Lontra, Lophiomys, Lophocebus, Lophuromys, Lorentzimys, Loris , Loxodonta, Lutra, Lutreolina, Lutrogale, Lycaon, Lyncodon, Lynx,
Ochotona, Ochrotomys, Octodon, Octodontomys, Octomys, Odobenus, Odocoileus, Oecomys, Oenomys, okapi, Olallamys, Oligoryzomys, Ommatophoca, Oncifelis, Ondatra, Onychogalea, Onychomys, Orcaella, Orcinus, Oreailurus, Oreamnos, Oreotragus, Ornithorhynchus, Orthogeomys, Orycteropus, Oryctolagus, Oryx, Oryzomys, Oryzorictes, Osbornictis, Osgoodomys, Otaria, Otocolobus, Otocyon, Otomops, Otomys, Otonycteris, Otonyctomys, Otopteropus, Ototylomys, Ourebia, Ovibos, Ovis, Oxymycterus, Ozotoceros,