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Animals in the Mammals of Western Hemisphere Atlas
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Note: some additional animals are in the atlas, however, only by their scientific names and therefore aren't listed below.

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Common Name
Atlas "Topic" Name
 Abert's Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Acermarca Gracile Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Acrobatic Cavy Rodentia (Rodents): Caviidae (cavies)
 Agile Gracile Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Alaska Marmot Rodentia (Rodents): Sciuridae (squirrels)
 Alaska Tiny Shrew Insectivora (insectivores): Soricidae (shrews)
 Alaskan Hare Lagomorpha: Leporidae (hares and rabbits)
 Alcorn's Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Allen's Big-eared Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Allen's Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Allen's Olingo Carnivora (carnivores): Procyonidae (cacomistle, coatis, raccoons, relatives)
 Allen's Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Allen's Yellow Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Alpine Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Alston's Woolly Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Amazon Dwarf Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 American Badger Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 American Beaver Rodentia (Rodents): Castoridae (beavers)
 American Bison Artiodactyla (even-toed ungulates) - Bovidae (goats, sheep & relatives)
 American Black Bear Carnivora (carnivores): Ursidae (bears)
 American Martin Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 American Mink Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 American Pika Lagomorpha: Ochotonidae (pikas)
 American Shrew Mole Insectivora (insectivores): Talpidae (moles)
 Andean Cat Carnivora (carnivores): Felidae (cats)
 Andean Hairy Armadillo Xenarthra (edentates): Dasypodidae (armadillos)
 Andean Mountain Cavy Rodentia (Rodents): Caviidae (cavies)
 Andean Night Monkey Primates: Cebidae: Aotinae (night monkeys)
 Andean Pampas Cat Carnivora (carnivores): Felidae (cats)
 Andean Slender Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Andean Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Andean Titi Monkey Primates: Cebidae: Callicebinae (titi monkeys)
 Andersen's Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Anderson's Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Antelope Jackrabbit Lagomorpha: Leporidae (hares and rabbits)
 Antillean Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Antillean Ghost-faced Bat Chiroptera (bats): Mormoopidae (ghost-faced; moustached; naked-backed bats)
 Aratathomas's Yellow-shouldered Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Arctic Fox Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
 Arctic Ground Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Arctic Hare Lagomorpha: Leporidae (hares and rabbits)
 Arctic Shrew Insectivora (insectivores): Soricidae (shrews)
 Argentine Brown Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Argentine Gray Fox Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
 Aripuana Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Arizona Gray Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Arizona Shrew Insectivora (insectivores): Soricidae (shrews)
 Ashy Chichilla Rat Rodentia (Rodents): Abrocomidae (chinchilla rats)
 Atacama Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Atwater's Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Azara'a Agouti Rodentia (Rodents): Dasyproctidae (acuchis and agoutis)
 Azara's Night Monkey Primates: Cebidae: Aotinae (night monkeys)
 Aztec Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
Common Name (B)
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 Bahama Raccoon Carnivora (carnivores): Procyonidae (cacomistle, coatis, raccoons, relatives)
 Bahaman Hutia Rodentia (Rodents): Capromyidae (West Indian hutias)
 Bahia Hairy Dwarf Porcupine Rodentia (Rodents): Erethizontidae (New World porcupines)
 Baird's Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Baird's Shrew Insectivora (insectivores): Soricidae (shrews)
 Baird's Tapir Perissodactyla (horses, tapirs): Tapiridae (tapirs)
 Baja California Rock Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Banana Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Bangs's Mountain Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Barbados Raccoon Carnivora (carnivores): Procyonidae (cacomistle, coatis, raccoons, relatives)
 Bare-tailed Woolly Opossum Didelphimorphia (American marsupials): Caluromyinae (woolly opossums and relatives)
 Barren Ground Shrew Insectivora (insectivores): Soricidae (shrews)
 Bearded Capuchin Primates: Cebidae (New World monkeys)
 Bearded Saki Primates: Cebidae: Callicebinae (titi monkeys)
 Beddard's Olingo Carnivora (carnivores): Procyonidae (cacomistle, coatis, raccoons, relatives)
 Behni's Big-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Belding's Ground Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Beni Titi Monkey Primates: Cebidae: Callicebinae (titi monkeys)
 Bennet's Chichilla Rat Rodentia (Rodents): Abrocomidae (chinchilla rats)
 Bicolor-spined Porcupine Rodentia (Rodents): Erethizontidae (New World porcupines)
 Bidentate Yellow-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Bidentate Yellow-shouldered Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Big Bonneted Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Big Brown Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Big Crested Mastiff Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Big Free-tailed Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Big Naked-backed Bat Chiroptera (bats): Mormoopidae (ghost-faced; moustached; naked-backed bats)
 Big Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Big Red bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Big Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Big-eared Brown Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Big-eared Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums)
 Big-eared Wooly Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Bighorn Sheep Artiodactyla (even-toed ungulates) - Bovidae (goats, sheep & relatives)
 Black Agouti Rodentia (Rodents): Dasyproctidae (acuchis and agoutis)
 Black and White Tassel-ear Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Black Bonneted Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Black Four-eyed Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums)
 Black Howling Monkey Primates: Cebidae: Alouattinae (howler monkeys)
 Black Jackrabbit Lagomorpha: Leporidae (hares and rabbits)
 Black Lion Tamarin Primates: Callitrichidae (marmosets and tamarins)
 Black Mastiff Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Black Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Black Saki Primates: Cebidae: Callicebinae (titi monkeys)
 Black Tufted-ear Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Black-chinned Emperor Tamarin Primates: Callitrichidae (marmosets and tamarins)
 Black-crowned Central American Squirrel Monkey Primates: Cebidae (New World monkeys)
 Black-crowned Dwarf Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Black-faced Black Spider Monkey Primates: Cebidae: Alouattinae (howler monkeys)
 Black-faced Lion Tamarin Primates: Callitrichidae (marmosets and tamarins)
 Black-Footed Ferret Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 Black-fronted Titi Primates: Cebidae: Callicebinae (titi monkeys)
 Black-handed Tamarin Primates: Callitrichidae (marmosets and tamarins)
 Black-headed Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Black-headed Night Monkey Primates: Cebidae: Aotinae (night monkeys)
 Black-headed Squirrel Monkey Primates: Cebidae (New World monkeys)
 Black-horned Capuchin Primates: Cebidae (New World monkeys)
 Blackish Shrew Opossum Paucituberculata: Paucituberculata (shrew opossums)
 Blackish Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Black-rumped Agouti Rodentia (Rodents): Dasyproctidae (acuchis and agoutis)
 Black-shouldered Opossum Didelphimorphia (American marsupials): Caluromyinae (woolly opossums and relatives)
 Black-tailed Hairy Dwarf Porcupine Rodentia (Rodents): Erethizontidae (New World porcupines)
 Black-tailed Hutia Rodentia (Rodents): Capromyidae (West Indian hutias)
 Black-tailed Jackrabbit Lagomorpha: Leporidae (hares and rabbits)
 Black-tailed Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Black-tailed Prairie Dog Rodentia (Rodents): Sciuridae (squirrels)
 Black-winged Little Yellow Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Blunt-eared Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Bobcat Carnivora (carnivores): Felidae (cats)
 Bogata Yellow-shouldered Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Bokermann's Nectar Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Bolivian Chichilla Rat Rodentia (Rodents): Abrocomidae (chinchilla rats)
 Bolivian Red Howling Monkey Primates: Cebidae: Alouattinae (howler monkeys)
 Bolivian Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Bolivian Squirrel Monkey Primates: Cebidae (New World monkeys)
 Bonda Mastiff Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Botta's Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Brazilian Agouti Rodentia (Rodents): Dasyproctidae (acuchis and agoutis)
 Brazilian Big-eyed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Brazilian Brown Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Brazilian Free-tailed Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Brazilian Gracile Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Brazilian Guinea Pig Rodentia (Rodents): Caviidae (cavies)
 Brazilian Porcupine Rodentia (Rodents): Erethizontidae (New World porcupines)
 Brazilian Three-banded Armadillo Xenarthra (edentates): Dasypodidae (armadillos)
 Bristle-spined Porcupine Rodentia (Rodents): Erethizontidae (New World porcupines)
 Broad-eared Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Broad-footed Mole Insectivora (insectivores): Talpidae (moles)
 Broad-toothed Tailless Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Brock's Yellow-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Brosset's Big-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Brown Bear Carnivora (carnivores): Ursidae (bears)
 Brown Four-eyed Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Brown Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Brown Hairy Dwarf Porcupine Rodentia (Rodents): Erethizontidae (New World porcupines)
 Brown Mastiff Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Brown Tent-making Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Brown-Headed Howling Monkey Primates: Cebidae: Alouattinae (howler monkeys)
 Brown's Hutia Rodentia (Rodents): Capromyidae (West Indian hutias)
 Brown-throated Three-toed Sloth Xenarthra (edentates): Bradypodidae (three-toed sloths)
 Brush Rabbit Lagomorpha: Leporidae (hares and rabbits)
 Bufffy-headed Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Buffy Broad-nosed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Buffy Flower Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Buffy Tufted-eared Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Buller's Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Buller's Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Bush Dog Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
Common Name (C)
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 Cabrera's Hutia Rodentia (Rodents): Capromyidae (West Indian hutias)
 Cacomistle Carnivora (carnivores): Procyonidae (cacomistle, coatis, raccoons, relatives)
 California Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 California Ground Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 California Leaf-nosed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 California Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Camas Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Canada Lynx Carnivora (carnivores): Felidae (cats)
 Capybara Rodentia (Rodents): Hydrochaeridae (capybara)
 Caribou Artiodactyla (even-toed ungulates) - Cervidae (deer)
 Carmen Mountain Shrew Insectivora (insectivores): Soricidae (shrews)
 Carriker's Round-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Cascade Golden-mantled Ground Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Cave Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Central American Agouti Rodentia (Rodents): Dasyproctidae (acuchis and agoutis)
 Central American Dwarf Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Central American Woolly Opossum Didelphimorphia (American marsupials): Caluromyinae (woolly opossums and relatives)
 Cerro Neblina Slender Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Chacoan Cavy Rodentia (Rodents): Caviidae (cavies)
 Chacoan Fairy Armadillo Xenarthra (edentates): Dasypodidae (armadillos)
 Chacoan Naked-tailed Armadillo Xenarthra (edentates): Dasypodidae (armadillos)
 Chacoan Peccary Artiodactyla (even-toed ungulates) - Tayassuidae (peccaries)
 Cherrie's Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Chestnut Long-tongued Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Chestnut Short-tailed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Chestnut-bellied Shrew Insectivora (insectivores): Soricidae (shrews)
 Chestnut-striped Short-tailed Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Chilean Guemal Artiodactyla (even-toed ungulates) - Cervidae (deer)
 Chilean Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Chilean Shrew Opossum Paucituberculata: Paucituberculata (shrew opossums)
 Chinchilla Rodentia (Rodents): Chinchillidae (chinchillas and viscachas)
 Chiriqui Olingo Carnivora (carnivores): Procyonidae (cacomistle, coatis, raccoons, relatives)
 Chiriqui Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Choco Broad-nosed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Cinereus Shrew Insectivora (insectivores): Soricidae (shrews)
 Cinnamon Dog-faced Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Cinnamon Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Cinnnamon Dog-faced Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Cliff Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Coast Mole Insectivora (insectivores): Talpidae (moles)
 Coiba Island Howling Monkey Primates: Cebidae: Alouattinae (howler monkeys)
 Coiban Agouti Rodentia (Rodents): Dasyproctidae (acuchis and agoutis)
 Coimbra's Titi Primates: Cebidae: Callicebinae (titi monkeys)
 Collared Peccary Artiodactyla (even-toed ungulates) - Tayassuidae (peccaries)
 Collared Pika Lagomorpha: Ochotonidae (pikas)
 Collared Titi Primates: Cebidae: Callicebinae (titi monkeys)
 Collie's Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Colombian Night Monkey Primates: Cebidae: Aotinae (night monkeys)
 Colombian Short-tailed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Colombian Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Colombian Weasel Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 Colombian Woolly Monkey Primates: Cebidae: Alouattinae (howler monkeys)
 Colorado Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Columbian Ground Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Commissaris's Long-tongued Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Common Big-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Common Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Common Squirrel Monkey Primates: Cebidae (New World monkeys)
 Common Yellow-toothed Cavy Rodentia (Rodents): Caviidae (cavies)
 Condor Shrew Opossom Paucituberculata: Paucituberculata (shrew opossums)
 Cotton-top Tamarin Primates: Callitrichidae (marmosets and tamarins)
 Coyote Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
 Cozumel Raccoon Carnivora (carnivores): Procyonidae (cacomistle, coatis, raccoons, relatives)
 Crab-eating Fox Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
 Crab-eating Raccoon Carnivora (carnivores): Procyonidae (cacomistle, coatis, raccoons, relatives)
 Crested Capuchin Primates: Cebidae (New World monkeys)
 Cuban Fig-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Cuban Flower Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Cuban Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Cuban Red Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Cuban Solenodon Insectivora (insectivores): Solenodontidae (solenodons)
 Cuban Yellow Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Culpeo Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
 Curacao Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
Common Name (D)
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 Dall's Sheep Artiodactyla (even-toed ungulates) - Bovidae (goats, sheep & relatives)
 Darien Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Darien Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Dark Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Dark Long-tongued Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Darwin's Fox Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
 Davies's Big-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Davis's Round-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Davy's Naked-backed Bat Chiroptera (bats): Mormoopidae (ghost-faced; moustached; naked-backed bats)
 Dekeyser's Nectar Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Delicate Slender Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Demarest's Hutia Rodentia (Rodents): Capromyidae (West Indian hutias)
 Deppe's Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Desert Cottontail Lagomorpha: Leporidae (hares and rabbits)
 Desert Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Desert Shrew Insectivora (insectivores): Soricidae (shrews)
 Dice's Cottontail Lagomorpha: Leporidae (hares and rabbits)
 Diminutive Serotine Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Domestic Guinea Pig Rodentia (Rodents): Caviidae (cavies)
 Dominican Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Dorothy's Slender Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Douglas's Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Douroucouli Primates: Cebidae: Aotinae (night monkeys)
 Dryland Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Durango Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Dwarf Bonneted Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Dwarf Brocket Artiodactyla (even-toed ungulates) - Cervidae (deer)
 Dwarf Dog-faced Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Dwarf Hutia Rodentia (Rodents): Capromyidae (West Indian hutias)
 Dwarf Little Fruit Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Dwarf Shrew Insectivora (insectivores): Soricidae (shrews)
Common Name (E)
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 Eared Hutia Rodentia (Rodents): Capromyidae (West Indian hutias)
 Eastern Buffy Flower Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Eastern Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Eastern Cottontail Lagomorpha: Leporidae (hares and rabbits)
 Eastern Fox Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Eastern Gray Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Eastern Hog-nosed Skunk Carnivora (carnivores): Mephitinae (skunks)
 Eastern Mole Insectivora (insectivores): Talpidae (moles)
 Eastern Pipistrelle Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Eastern Red Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Eastern Small-footed Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Eastern Spotted Skunk Carnivora (carnivores): Mephitinae (skunks)
 Ecuadorian Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Ega Long-tongued Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Eldorado Broad-nosed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Elegant Fat-tailed Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Elegant Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Elk Artiodactyla (even-toed ungulates) - Cervidae (deer)
 Emilia's Gracile Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Emilia's Short-tailed Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Ender's Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Equatorial Dog-faced Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Equatorial Saki Primates: Cebidae: Callicebinae (titi monkeys)
 Ermine Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 Escudo Island Three-toed Sloth Xenarthra (edentates): Bradypodidae (three-toed sloths)
 Espiritu Santo Island Antelope Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Evening Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
Common Name (F)
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 Fallow Deer Artiodactyla (even-toed ungulates) - Cervidae (deer)
 Fernandez's Sword-nosed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Fiery Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Findley's Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Fischer's Little Fruit Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Fish-eating Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Fisher Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 Flat-headed Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Fog Shrew Insectivora (insectivores): Soricidae (shrews)
 Franklin's Ground Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Fraternal Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Fringed Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Fringed Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Fringe-lipped Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (A-F)
 Frosted Hairy Dwarf Porcupine Rodentia (Rodents): Erethizontidae (New World porcupines)
Common Name (G)
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 Garrido's Hutia Rodentia (Rodents): Capromyidae (West Indian hutias)
 Gaspe Shrew Insectivora (insectivores): Soricidae (shrews)
 Genoway's Yellow Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Geoffroy's Cat Carnivora (carnivores): Felidae (cats)
 Geoffroy's Monk Saki Primates: Cebidae: Callicebinae (titi monkeys)
 Geoffroy's Spider Monkey Primates: Cebidae: Alouattinae (howler monkeys)
 Geoffroy's Tailless Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Geoffroy's Tamarin Primates: Callitrichidae (marmosets and tamarins)
 Geoffroy's Tufted-ear Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Gervais's Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Ghost-faced Bat Chiroptera (bats): Mormoopidae (ghost-faced; moustached; naked-backed bats)
 Giant Anteater Xenarthra (edentates): Myrmecophagidae (anteaters)
 Giant Armadillo Xenarthra (edentates): Dasypodidae (armadillos)
 Giant Otter Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 Giant Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Glacier Bay Water Shrew Insectivora (insectivores): Soricidae (shrews)
 Godman's Nectar Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Godman's Whiskered Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Goeldi's Monkey Primates: Callitrichidae (marmosets and tamarins)
 Golden Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Golden Lion Tamarin Primates: Callitrichidae (marmosets and tamarins)
 Golden-backed Squirrel Monkey Primates: Cebidae (New World monkeys)
 Golden-handed Tamarin Primates: Callitrichidae (marmosets and tamarins)
 Golden-headed Lion Tamarin Primates: Callitrichidae (marmosets and tamarins)
 Golden-mantled Ground Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Golden-mantled Howling Monkey Primates: Cebidae: Alouattinae (howler monkeys)
 Golden-mantled Saddle-back Tamarin Primates: Callitrichidae (marmosets and tamarins)
 Golden-White Bare-ear Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Golden-White Tassel-ear Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Goodwin's Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Graell's Black-mantled Tamarin Primates: Callitrichidae (marmosets and tamarins)
 Gray Brocket Artiodactyla (even-toed ungulates) - Cervidae (deer)
 Gray Four-eyed Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums)
 Gray Fox Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
 Gray Long-tongued Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Gray Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Gray Short-tailed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Gray Short-tailed Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Gray Slender Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Gray Wolf Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
 Gray-bellied Slender Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Gray-collared Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Gray-footed Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Grayish Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Gray's Bald Faced Saki Primates: Cebidae: Callicebinae (titi monkeys)
 Great Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Great Long-nosed Armadillo Xenarthra (edentates): Dasypodidae (armadillos)
 Great Long-nosed Long-tongued Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Great Stripe-faced Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Greater Broad-nosed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Greater Bulldog Bat Chiroptera (bats): Noctilionidae (bulldog bats)
 Greater Grison Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 Greater Guinea Pig Rodentia (Rodents): Caviidae (cavies)
 Greater Naked-tailed Armadillo Xenarthra (edentates): Dasypodidae (armadillos)
 Greater Round-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Greater Spear-nosed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Greater Yellow-shouldered Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Green Acouchy Rodentia (Rodents): Dasyproctidae (acuchis and agoutis)
 Guadalupe Big-eyed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Guadelope Raccoon Carnivora (carnivores): Procyonidae (cacomistle, coatis, raccoons, relatives)
 Guadeloupe Big Brown Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Guanaco Artiodactyla (even-toed ungulates) - Camelidae (llamas)
 Guatemalan Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Guayaquil Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Guianan Bearded Saki Primates: Cebidae: Callicebinae (titi monkeys)
 Guianan Bonneted Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Guianan Brown Capuchin Primates: Cebidae (New World monkeys)
 Guianan Spear-nosed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Guianan Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Gundlach's Hutia Rodentia (Rodents): Capromyidae (West Indian hutias)
 Gunnison's Prairie Dog Rodentia (Rodents): Sciuridae (squirrels)
Common Name (H)
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 Hairy Big-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Hairy Big-eyed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Hairy Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Hairy Little Fruit Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Hairy Long-nosed Armadillo Xenarthra (edentates): Dasypodidae (armadillos)
 Hairy Yellow-shouldered Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Hairy-legged Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Hairy-legged Vampire Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Hairy-tailed Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Hairy-tailed Mole Insectivora (insectivores): Talpidae (moles)
 Handley's Nectar Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Handley's Slender Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Handley's Tailless Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Harmless Serotine Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Harris's Antelope Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Harris's Olingo Carnivora (carnivores): Procyonidae (cacomistle, coatis, raccoons, relatives)
 Heller's Broad-nosed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Highland Yellow-shouldered Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Hispaniolan Hutia Rodentia (Rodents): Capromyidae (West Indian hutias)
 Hispaniolan Solenodon Insectivora (insectivores): Solenodontidae (solenodons)
 Hispid Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Hoary Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Hoary Fox Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
 Hoary Marmot Rodentia (Rodents): Sciuridae (squirrels)
 Hoffmann's Titi Monkey Primates: Cebidae: Callicebinae (titi monkeys)
 Hoffman's Two-toed Sloth Xenarthra (edentates): Megalonychidae (two-toed sloths)
 Honduran Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Honduran Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Hooded Skunk Carnivora (carnivores): Mephitinae (skunks)
 Hopi Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Humboldt's Big-eared Brown Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Humboldt's Black-headed Uacari Primates: Cebidae: Callicebinae (titi monkeys)
 Humboldt's Hog-nosed Skunk Carnivora (carnivores): Mephitinae (skunks)
 Humboldt's Woolly Monkey Primates: Cebidae: Alouattinae (howler monkeys)
Common Name (I)
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 Idaho Ground Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Idaho Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Ihering's Short-tailed Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Incan Little Mastiff Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Incan Shrew Opossum Paucituberculata: Paucituberculata (shrew opossums)
 Indiana Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Insular Long-tongued Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Intermediate Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Inyo Shrew Insectivora (insectivores): Soricidae (shrews)
 Ipanema Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Isla Escudo Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Island Gray Fox Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
Common Name (J-K)
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 Jackson's Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Jaguar Carnivora (carnivores): Felidae (cats)
 Jaguarundi Carnivora (carnivores): Felidae (cats)
 Jamaican Fig-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Jamaican Flower Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Jamaican Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Jamaican Red Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Jones' Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Junin Red Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Ka'apor Capuchin Primates: Cebidae (New World monkeys)
 Kalinkowski's Agouti Rodentia (Rodents): Dasyproctidae (acuchis and agoutis)
 Kalinowski's Gracile Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Keen's Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Kinkajou Carnivora (carnivores): Procyonidae (cacomistle, coatis, raccoons, relatives)
 Kit Fox Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
 Kodkod Carnivora (carnivores): Felidae (cats)
 Koopman's Porcupine Rodentia (Rodents): Erethizontidae (New World porcupines)
Common Name (L)
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 La Val's Disk-winged Bat Chiroptera (bats): Thyropteridae (disk-winged bats)
 Lalinowski's Mastiff Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Large Fruit-eating Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Large Hairy Armadillo Xenarthra (edentates): Dasypodidae (armadillos)
 Large-headed Capuchin Primates: Cebidae (New World monkeys)
 Large-toothed Shrew Insectivora (insectivores): Soricidae (shrews)
 Leach's Long-tongued Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Least Big-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Least Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Least Shrew Insectivora (insectivores): Soricidae (shrews)
 Least Weasel Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 Least Yellow Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Lesser Bulldog Bat Chiroptera (bats): Noctilionidae (bulldog bats)
 Lesser Grison Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 Lesser Spear-nosed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Lesser Yellow-shouldered Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Little Big-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Little Big-eyed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Little Brown Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Little Goblin Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Little Red Brocket Artiodactyla (even-toed ungulates) - Cervidae (deer)
 Little Rufous Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Little Spotted Cat Carnivora (carnivores): Felidae (cats)
 Little White-shouldered Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Little Yellow Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Little Yellow-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Little Yellow-shouldered Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Llano Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Llanos Long-nosed Armadillo Xenarthra (edentates): Dasypodidae (armadillos)
 Lodgepole Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Long-eared Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Long-eared Gray Shrew Insectivora (insectivores): Soricidae (shrews)
 Long-eared Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Long-furred Woolly Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Long-legged Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Long-legged Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Long-nosed Short-tailed Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Long-snouted Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Long-tailed Fat-tailed Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Long-tailed Gracile Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Long-tailed Shrew Insectivora (insectivores): Soricidae (shrews)
 Long-tailed Weasel Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 Luis Manuel's Tailless Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Luis's Yellow-shouldered Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Lutrine Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums)
Common Name (M)
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 MacConnell's Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 MacLeay's Mustached Bat Chiroptera (bats): Mormoopidae (ghost-faced; moustached; naked-backed bats)
 Maned Three-toed Sloth Xenarthra (edentates): Bradypodidae (three-toed sloths)
 Maned Wolf Carnivora (carnivores): Canidae (coyotes, dogs, foxes, wolves)
 Manicore Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Marajo Short-tailed Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Marca's Marmoset Primates: Callitrichidae (marmosets and tamarins)
 March Deer Artiodactyla (even-toed ungulates) - Cervidae (deer)
 Margarita Deer Artiodactyla (even-toed ungulates) - Cervidae (deer)
 Margay Carnivora (carnivores): Felidae (cats)
 Marine Otter Carnivora (carnivores): Mustelidae (badgers, otters, weasels, relatives)
 Marinkelle's Sword-nosed Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Marsh Rabbit Lagomorpha: Leporidae (hares and rabbits)
 Marsh Shrew Insectivora (insectivores): Soricidae (shrews)
 Martin's Bare-faced Tamarin Primates: Callitrichidae (marmosets and tamarins)
 Ma's Night Monkey Primates: Cebidae: Aotinae (night monkeys)
 Mato Grossso Dog-faced Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Maues Marmoset Primates: Callitrichidae (marmosets and tamarins)
 Maya Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Mcihenny's Four-eyed Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums)
 Mearns's Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Medellin Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Medem's Collared Titi Primates: Cebidae: Callicebinae (titi monkeys)
 Melissa's Yellow-eared Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Merida Brocket Artiodactyla (even-toed ungulates) - Cervidae (deer)
 Merida Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Merida White-tailed Deer Artiodactyla (even-toed ungulates) - Cervidae (deer)
 Merriam's Chipmunk Rodentia (Rodents): Sciuridae (squirrels)
 Merriam's Ground Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Merriam's Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Merriam's Short-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Merriam's Shrew Insectivora (insectivores): Soricidae (shrews)
 Mexican Agouti Rodentia (Rodents): Dasyproctidae (acuchis and agoutis)
 Mexican Cottontail Lagomorpha: Leporidae (hares and rabbits)
 Mexican Dog-faced Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Mexican Fox Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Mexican Ground Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Mexican Hairy Dwarf Porcupine Rodentia (Rodents): Erethizontidae (New World porcupines)
 Mexican Long-eared Bat Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Mexican Long-tailed Shrew Insectivora (insectivores): Soricidae (shrews)
 Mexican Long-tongued Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Mexican Mouse Opossum Didelphimorphia (American marsupials): Didelphinae (American opossums) mouse opossums
 Mexican Prairie Dog Rodentia (Rodents): Sciuridae (squirrels)
 Mexican Shrew Insectivora (insectivores): Soricidae (shrews)
 Mexican Small-eared Shrew Insectivora (insectivores): Soricidae (shrews)
 Michoacan Pocket Gopher Rodentia (Rodents): Geomyidae (pocket gophers)
 Miller's Long-tongued Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Miller's Mastiff Bat Chiroptera (bats): Molossidae (free-tailed bats)
 Miller's Myotis Chiroptera (bats): Vespertilionidae (evening bats and vesper bats)
 Minor Long-nosed Long-tongued Bat Chiroptera (bats): Phyllostomidae (New World leaf-nosed bats) (G-M)
 Mohave Ground Squirrel Rodentia (Rodents): Sciuridae (squirrels)
 Molina's Hog-nosed