Ma's night monkey
Macarthur's shrew
Macconnell's bat
Macconnell's climbing mouse
Macconnell's rice rat
Macedonian mouse
Mackillingin's gerbil
Maclaud's horseshoe bat
Maclear's rat
Macleay's mustached bat
Macmillan's shrew
Macmillan's thicket rat
Macow's shrew
Madagascan dwarf hippopotamus
Madagascan flying fox
Madagascan fruit bat
Madagascan large free-tailed bat
Madagascan rousette
Madagascan shrew
Madeira pipistrelle
Madras tree shrew
Magdalena rat
Magdalena spiny rat
Magellanic pygmy rice rat
Magellanic tuco-tuco
Maggie Taylor's roundleaf bat
mahogany glider
Mahomet mouse
Major's tufted-tailed rat
Malabar civet
Malabar spiny dormouse
Malagasy civet
Malagasy giant rat
Malagasy mouse-eared bat
Malaita tube-nosed fruit bat
Malayan civet
Malayan field rat
Malayan flying lemur
Malayan free-tailed bat
Malayan horseshoe bat
Malayan mountain spiny rat
Malayan pangolin
Malayan porcupine
Malayan pygmy shrew
Malayan roundleaf bat
Malayan shrew
Malayan slit-faced bat
Malayan tailless leaf-nosed bat
Malayan tapir
Malayan tree rat
Malayan weasel
Mamore arboreal rice rat
Manchurian hare
Manchurian zokor
Mandarin vole
Mandelli's mouse-eared bat
mandrill
maned three-toed sloth
maned wolf
Manenguba shrew
Manipur bush rat
Manipur white-toothed rat
Manso grass mouse
mantled howler monkey
mantled mastiff bat
Manusela mosaic-tailed rat
Maquassie musk shrew
Marajó short-tailed opossum
marbled cat
marbled polecat
Marcano's solenodon
Margarita Island kangaroo rat
margay
Marianas flying fox
Marie's vole
marine otter
Marinkelle's sword-nosed bat
maritime striped squirrel
Markham's grass mouse
markhor
marmoset rat
marsh deer
marsh mongoose
marsh mouse
marsh rabbit
marsh rat
marsh rice rat
marsh shrew
marsupial mole
Martino's snow vole
masked flying fox
masked mouse-tailed dormouse
masked palm civet
masked titi
masked white-tailed rat
master leaf-eared mouse
Mato Grosso dog-faced bat
Matthey's mouse
Maule tuco-tuco
Mauritanian gerbil
Mauritanian shrew
Mauritian tomb bat
Max's shrew
Maximowicz's vole
Maxwell's duiker
Maya mouse
Mayor's mouse
mbarapi or sable antelope
meadow jumping mouse
meadow vole
Mearns's flying fox
Mearns's grasshopper mouse
Mearns's pouched mouse
Mearns's squirrel
Mechow's mole rat
Mediterranean horseshoe bat
Mediterranean mole
Mediterranean monk seal
Mediterranean pine vole
medium-tailed brush-furred
Medje free-tailed bat
meerkat
Mehely's horseshoe bat
Melissa's yellow-eared bat
Meller's mongoose
melon-headed whale
Mendoza tuco-tuco
Mentawai leaf monkey
Mentawai long-tailed giant rat
Mentawai rat
Mentawai squirrel
Mentawai three-striped squirrel
Mentawi flying squirrel
Menzbier's marmot
Menzies's echymipera
Merida small-eared shrew
Merriam's chipmunk
Merriam's ground squirrel
Merriam's kangaroo rat
Merriam's pocket gopher
Merriam's pocket mouse
Merriam's shrew
Mesopotamian gerbil
mesquite mouse
Mexican agouti
Mexican big-eared bat
Mexican black howler monkey
Mexican cottontail
Mexican deer mouse
Mexican fox squirrel
Mexican funnel-eared bat
Mexican ground squirrel
Mexican hairy dwarf porcupine
Mexican harvest mouse
Mexican long-nosed bat
Mexican long-tailed shrew
Mexican long-tongued bat
Mexican mouse opossum
Mexican prairie dog
Mexican shrew
Mexican small-eared shrew
Mexican spiny pocket mouse
Mexican volcano mouse
Mexican vole
Mexican water mouse
Mexican woodrat
Mianzini mole rat
Michoacan deer mouse
Michoacan pocket gopher
mid-day jird
Midas free-tailed bat
Midas tamarin
Middendorf's vole
Millard's rat
Miller's long-tongued bat
Miller's mastiff bat
Miller's myotis
Miller's striped mouse
Milne-Edwards's sportive lemur
Minahassa pipistrelle
Minahassa ranee mouse
Minca spiny rat
Mindanao flying squirrel
Mindanao gymnure
Mindanao hairy-tailed rat
Mindanao lowland forest mouse
Mindanao montane forest mouse
Mindanao mountain rat
Mindanao pygmy fruit bat
Mindanao shrew
Mindanao shrew rat
Mindanao squirrel
Mindanao tree shrew
Mindoro black rat
Mindoro rat
Mindoro shrew
Mindoro striped rat
miniscule shrew
minke whale
minute shrew
Mira climbing rat
Misonne's soft-furred mouse
Miss Ryley's soft-furred rat
Mitchell's hopping mouse
mitred horseshoe bat
mitred leaf monkey
Mittendorf's striped grass mouse
Mo's spiny rat
modest titi
Mohave ground squirrel
Molaccan prehensile-tailed rat
mole shrew
Molina's grass mouse
Molina's hog-nosed skunk
Moloney's flat-headed bat
Moluccan cuscus
Moluccan flying fox
Moluccan naked-backed fruit bat
mona monkey
Monard's dormouse
Moncton's mosaic-tailed rat
Mongalla free-tailed bat
Mongolian five-toed jerboa
Mongolian gazelle
Mongolian hamster
Mongolian jird
Mongolian silver vole
Mongolian three-toed jerboa
Mongolian vole
mongoose lemur
monito del monte
monjon
monk saki
monster rice rat
montane fish-eating rat
montane guinea pig
montane hutia
montane long-nosed squirrel
montane monkey-faced bat
montane mouse shrew
montane myotis
montane oldfield mouse
montane shaggy rat
montane shrew
montane vole
montane white-toothed shrew
montane wood mouse
monte gerbil mouse
moon shrew
moon striped mouse
moon-toothed degu
moonrat
moorland shrew
moose
Morgan's gerbil mouse
Morris's bat
Mortlock flying fox
moss-forest blossom bat
moss-forest rat
mottle-face tamarin
mottled tuco-tuco
mottled-tailed shrew mouse
mound-building mouse
Mount Popa pipistrelle
mountain anoa
mountain beaver
mountain brushtail possum
mountain coati
mountain cottontail
mountain cuscus
mountain degu
mountain gazelle
mountain giant rat
mountain goat
mountain hare
mountain mosaic-tailed rat
mountain noctule
mountain nyala
mountain paca
mountain pocket gopher
mountain pygmy possum
mountain reedbuck
mountain shrew
mountain spiny pocket mouse
mountain spiny rat
mountain tapir
mountain tree shrew
mountain tube-nosed fruit bat
mountain water rat
mountain weasel
mountain zebra
Moupin pika
mouse bandicoot
mouse-eared bat
mouse-like hamster
mouse-tailed shrew
mouse-tailed spiny rat
moustached monkey
Mozambique thicket rat
Mt. Apo forest mouse
Mt. Data shrew rat
Mt. Gargues pipistrelle
Mt. Hermon field mouse
Mt. Isarog shrew mouse
Mt. Kahuzi climbing mouse
Mt. Kenya shrew
Mt. Lyell shrew
Mt. Malindang shrew
Mt. Oku rat
Mt. Pirri climbing mouse
Mt. Pirri isthmus rat
Mueller's giant Sunda rat
Muennink's spiny rat
Muisk vole
mule deer
mulgara
Muli pika
mullah spiny mouse
murine mouse opossum
muriqui or woolly spider monkey
murree vole
muskox
muskrat
musky rat kangaroo
Musschenbroek's spiny rat
Musser's shrew mouse
Musso's fish-eating rat
mutable sun squirrel
Muton's soft-furred mouse
Mzab gundi