This list is based on my global mammalwatching checklist, available here.

At May 17 2023

DIDELPHIDAE
Black-eared Opossum (Didelphis marsupialis)
Virginia Opossum (D.virginiana)
Northern Four-eyed Opossum (Philander vossi)
DASYPODIDAE
Nine-banded Armadillo (Dasypus novemcinctus)
TRICHECHIDAE
American Manatee (Trichechus manatus)
OCHOTONIDAE
Collared Pika (Ochotona collaris)
American Pika (O.princeps)
LEPORIDAE
Volcano Rabbit (Romerolagus diazi)
Swamp Rabbit (Sylvilagus aquaticus)
Desert Cottontail (S.audubonii)
Brush Rabbit (S.bachmani)
Mexican Cottontail (S.cunicularius)
Eastern Cottontail (S.floridanus)
Robust Cottontail (S.holzneri)
Pygmy Rabbit (S.idahoensis)
Mountain Cottontail (S.nuttallii)
Appalachian Cottontail (S.obscurus)
Marsh Rabbit (S.palustris)
New England Cottontail (S.transitionalis)
Antelope Jackrabbit (Lepus alleni)
Snowshoe Hare (L.americanus)
Arctic Hare (L.arcticus)
Black-tailed Jackrabbit (L.californicus)
White-sided Jackrabbit (L.callotis)
White-tailed Jackrabbit (L.townsendii)
CASTORIDAE
American Beaver (Castor canadensis)
HETEROMYIDAE
Mexican Spiny Pocket Mouse (Heteromys irroratus)
Painted Spiny Pocket Mouse (H.pictus)
Arizona Pocket Mouse (Perognathus amplus) (?)
Silky Pocket Mouse (P.flavus)
Little Pocket Mouse (P.longimembris)
Merriam’s Pocket Mouse (P.merriami)
Great Basin Pocket Mouse (P.mollipilosus)
Dalquest’s Pocket Mouse (Chaetodipus ammophilus)
Little Desert Pocket Mouse (C.arenarius)
Bailey’s Pocket Mouse (C.baileyi)
California Pocket Mouse (C.californicus)
San Diego Pocket Mouse (C.fallax)
Long-tailed Pocket Mouse (C.formosus)
Hispid Pocket Mouse (C.hispidus)
Rock Pocket Mouse (C.intermedius)
Nelson’s Pocket Mouse (C.nelsoni)
Desert Pocket Mouse (C.penicillatus)
Sinaloan Pocket Mouse (C.pernix)
Baja Pocket Mouse (C.rudinoris)
Cerralvo Pocket Mouse (C.siccus)
Spiny Pocket Mouse (C.spinatus)
Dark Kangaroo Mouse (Microdipodops megacephalus)
Pale Kangaroo Mouse (M.pallidus)
Agile Kangaroo Rat (Dipodomys agilis)
California Kangaroo Rat (D.californicus)
Gulf Coast Kangaroo Rat (D.compactus)
Desert Kangaroo Rat (D.deserti)
Texas Kangaroo Rat (D.elator)
Heermann’s Kangaroo Rat (D.heermanni)
Giant Kangaroo Rat (D.ingens)
Merriam’s Kangaroo Rat (D.merriami)
Chisel-toothed Kangaroo Rat (D.microps)
Fresno Kangaroo Rat (D.nitratoides)
Ord’s Kangaroo Rat (D.ordii)
Panamint Kangaroo Rat (D.panamintinus)
Phillip’s Kangaroo Rat (D.phillipsii)
Dulzura Kangaroo Rat (D.simulans)
Banner-tailed Kangaroo Rat (D.spectabilis)
Stephens’ Kangaroo Rat (D.stephensi)
Narrow-faced Kangaroo Rat (D.venustus)
GEOMYIDAE
Botta’s Pocket Gopher (Thomomys bottae)
Camas Pocket Gopher (T.bulbivorus)
Mountain Pocket Gopher (T.monticola)
Northern Pocket Gopher (T.talpoides)
Desert Pocket Gopher (Geomys arenarius)
Attwater’s Pocket Gopher (G.attwateri)
Baird’s Pocket Gopher (G.breviceps)
Plains Pocket Gopher (G.bursarius)
Knox Jones’s Pocket Gopher (G.knoxjonesi)
Texas Pocket Gopher (G.personatus)
Strecker’s Pocket Gopher (G.streckeri)
Central Texas Pocket Gopher (G.texensis)
Yellow-faced Pocket Gopher (Cratogeomys castanops)
Oriental Basin Pocket Gopher (C.fulvescens)
Smoky Pocket Gopher (C.fumosus)
Merriam’s Pocket Gopher (C.merriami)
ERETHIZONTIDAE
North American Porcupine (Erethizon dorsatum)
DASYPROCTIDAE
Central American Agouti (Dasyprocta punctata)
CAPROMYIDAE
Cuvier’s Hutia (Plagiodontia aedium)
ECHIMYIDAE
Coypu (Myocastor coypus)
APLODONTIIDAE
Mountain Beaver (Aplodontia rufa)
SCIURIDAE
Douglas’s Squirrel (Tamiasciurus douglasii)
Fremont’s Squirrel (T.fremonti)
North American Red Squirrel (T.hudsonicus)
Abert’s Squirrel (Sciurus aberti)
Allen’s Squirrel (S.alleni)
Arizona Gray Squirrel (S.arizonensis)
Red-bellied Squirrel (S.aureogaster)
Eastern Gray Squirrel (S.carolinensis)
Collie’s Squirrel (S.colliaei)
Deppe’s Squirrel (S.deppei)
Western Gray Squirrel (S.griseus)
Mexican Fox Squirrel (S.nayaritensis)
Bryant’s Fox Squirrel (S.niger)
Peters’s Squirrel (S.oculatus)
Yucatan Squirrel (S.yucatanensis)
Humboldt’s Flying Squirrel (Glaucomys oregonensis)
Carolina Flying Squirrel (G.sabrinus)
Southern Flying Squirrel (G.volans)
Eastern Chipmunk (Tamias striatus)
Alpine Chipmunk (Neotamias alpinus)
Yellow-pine Chipmunk (N.amoenus)
Gray-footed Chipmunk (N.canipes)
Gray-collared Chipmunk (N.cinereicollis)
Cliff Chipmunk (N.dorsalis)
Merriam’s Chipmunk (N.merriami)
Least Chipmunk (N.minimus)
California Chipmunk (N.obscurus)
Yellow-cheeked Chipmunk (N.ochrogenys)
Palmer’s Chipmunk (N.palmeri)
Panamint Chipmunk (N.panamintinus)
Long-eared Chipmunk (N.quadrimaculatus)
Colorado Chipmunk (N.quadrivittatus)
Red-tailed Chipmunk (N.ruficaudus)
Hopi Chipmunk (N.rufus)
Allen’s Chipmunk (N.senex)
Siskiyou Chipmunk (N.siskiyou)
Sonoma Chipmunk (N.sonomae)
Lodgepole Chipmunk (N.speciosus)
Townsend’s Chipmunk (N.townsendii)
Hidden Forest Chipmunk (N.umbrinus)
Harris’s Antelope Squirrel (Ammospermophilus harrisii)
Texas Antelope Squirrel (A.interpres)
White-tailed Antelope Squirrel (A.leucurus)
Nelson’s Antelope Squirrel (A.nelsoni)
Uinta Ground Squirrel (Urocitellus armatus)
Belding’s Ground Squirel (U.beldingi)
Northern Idaho Ground Squirrel (U.brunneus)
Merriam’s Ground Squirrel (U.canus)
Columbian Ground Squirrel (U.columbianus)
Nevada Ground Squirrel (U.elegans)
Piute Ground Squirrel (U.mollis)
Arctic Ground Squirrel (U.parryii)
Richardson’s Ground Squirrel (U.richardsonii)
Townsend’s Ground Squirrel (U.townsendii)
Washington Ground Squirrel (U.washingtoni)
Golden-mantled Ground Squirrel (Callospermophilus lateralis)
Cascade Ground Squirrel (C.saturatus)
Mexican Ground Squirrel (Ictidomys mexicanus)
Rio Grande Ground Squirrel (I.parvidens)
Thirteen-lined Ground Squirrel (I.tridecemlineatus)
Franklin’s Ground Squirrel (Poliocitellus franklinii)
California Ground Squirrel (Otospermophilus beecheyi)
Rock Squirrel (O.variegatus)
Mohave Ground Squirrel (Xerospermophilus mohavensis)
Perote Ground Squirrel (X.perotensis)
Spotted Ground Squirrel (X.spilosoma)
Round-tailed Ground Squirrel (X.tereticaudus)
Alaska Marmot (Marmota broweri)
Hoary Marmot (M.caligata)
Yellow-bellied Marmot (M.flaviventris)
Woodchuck (M.monax)
Olympic Marmot (M.olympus)
Vancouver Island Marmot (M.vancouverensis)
Gunnison’s Prairie Dog (Cynomys gunnisoni)
White-tailed Prairie Dog (C.leucurus)
Black-tailed Prairie Dog (C.ludovicianus)
Mexican Prairie Dog (C.mexicanus)
Utah Prairie Dog (C.parvidens)
ZAPODIDAE
Meadow Jumping Mouse (Zapus hudsonius)
North-western Jumping Mouse (Z.saltator)
Pacific Jumping Mouse (Z.trinotatus)
DIPODIDAE
Western Woodland Jumping Mouse (Napaeozapus abietorum)
CRICETIDAE
Round-tailed Muskrat (Neofiber alleni)
Muskrat (Ondatra zibethicus)
Neartic Collared Lemming (Dicrostonyx groenlandicus)
Southern Red-backed Vole (Clethrionomys gapperi)
Northern Red-backed Vole (C.rutilus)
California Vole (Microtus californicus)
Western Meadow Vole (M.drummondii)
Long-tailed Vole (M.longicaudus)
Mexican Vole (M.mexicanus)
Mogollon Vole (M.mogollonensis)
Montane Vole (M.montanus)
Meadow Vole (M.pennsylvanicus)
Woodland Vole (M.pinetorum)
Townsend’s Vole (M.townsendii)
White-throated Woodrat (Neotoma albigula)
Bryant’s Woodrat (N.bryanti)
Bushy-tailed Woodrat (N.cinerea)
Eastern Woodrat (N.floridana)
Dusky-footed Woodrat (N.fuscipes)
Goldman’s Woodrat (N.goldmani)
Desert Woodrat (N.lepida)
Big-eared Woodrat (N.macrotis)
Allegheny Woodrat (N.magister)
Mexican Woodrat (N.mexicana)
Southern Plains Woodrat (N.micropus)
Sonoran Woodrat (N.phenax)
Stephen’s Woodrat (N.stephensi) (?)
Golden Mouse (Ochrotomys nuttalli)
Northern Pygmy Mouse (Baiomys taylori)
Mexican Volcano Mouse (Neotomodon alstoni)
Volcano Harvest Mouse (Reithrodontomys chrysopsis)
Fulvous Harvest Mouse (R.fulvescens)
Southern Marsh Harvest Mouse (R.megalotis)
Plains Harvest Mouse (R.montanus)
Sumachrasti’s Harvest Mouse (R.sumichrasti)
Mearns’s Grasshopper Mouse (Onychomys arenicola)
Northern Grasshopper Mouse (O.leucogaster)
Southern Grasshopper Mouse (O.torridus)
Michoacan Deer Mouse (Osgoodomys banderanus)
Oaxacan Rock Deermouse (Peromyscus amplus)
Yukon Deermouse (P.arcticus)
Texas Deermouse (P.attwateri)
Brush Mouse (P.boylii)
Perote Deer Mouse (P.bullatus)
California Mouse (P.californicus)
Jalisco Deermouse (P.chrysopus)
Tamaulipas White-ankled Deermouse (P.collinus)
Canyon Mouse (P.crinitus)
Rock Mouse (P.difficilis)
Cactus Mouse (P.eremicus)
Eva’s Desert Mouse (P.eva)
Northern Baja Deermouse (P.fraterculus)
Blackish Deer Mouse (P.furvus)
Gambel’s Deermouse (P.gambelii)
Cotton Deermouse (P.gossypinus)
Osgood’s Mouse (P.gratus)
Hooper’s Deer Mouse (P.hooperi)
Transvolcanic Deermouse (P.hylocetes)
Northwestern Deermouse (P.keeni)
Southern Deermouse (P.labecula)
Northern White-ankled Mouse (P.laceianus)
White-footed Mouse (P.leucopus)
Tehuantepec Deermouse (P.leucurus)
Nimble-footed Deer Mouse (P.levipes)
North American Deermouse (P.maniculatus)
Black-eared Mouse (P.melanotis)
Mesquite Mouse (P.merriami)
Mexican Deer Mouse (P.mexicanus)
Northern Rock Mouse (P.nasutus)
White-ankled Mouse (P.pectoralis)
Oldfield Mouse (P.polionotus)
Nayarit Deer Mouse (P.simulus)
Western Deermouse (P.sonoriensis)
Gleaning Deer Mouse (P.spicilegus)
Pinyon Mouse (P.truei)
Yucatan Deer Mouse (P.yucatanicus)
Nelson’s Giant Deer Mouse (Megadontomys nelsoni)
Arizona Cotton Rat (Sigmodon arizonae)
Tawny-bellied Cotton Rat (S.fulviventer)
Hispid Cotton Rat (S.hispidus)
Yellow-nosed Cotton Rat (S.ochrognathus)
Kansas Bog Lemming (Synaptomys cooperi)
Brown Lemming (Lemmus trimucronatus)
Alfaro’s Rice Rat (Handleyomys alfaroi)
Fulvous Pygmy Rice Rat (Oligoryzomys fulvescens)
Marsh Rice Rat (Oryzomys palustris)
Texas Marsh Rice Rat (O.texensis)
Big-eared Climbing Rat (Ototylomys phyllotis)
MURIDAE
House Mouse (Mus musculus)
House Rat (Rattus rattus)
ATELIDAE
Geoffroy’s Spider Monkey (Ateles geoffroyi)
HOMINIDAE
Human (Homo sapiens)
SORICIDAE
Smoky Shrew (Sorex fumeus)
American Pygmy Shrew (S.hoyi) (?)
Montane Shrew (S.monticola) (†)
American Water Shrew (S.palustris)
Trowbridge’s Shrew (S.trowbridgii)
Northern Short-tailed Shrew (Blarina brevicauda)
SOLENODONTIDAE
Haitian Solenodon (Solenodon paradoxus)
EMBALLONURIDAE
Thomas’s Sac-winged Bat (Balantiopteryx io)
Gray Sac-winged Bat (B.plicata)
Lesser Dog-like Bat (Peropteryx macrotis)
Greater Sac-winged Bat (Saccopteryx bilineata)
MORMOOPIDAE
Antillean Ghost-faced Bat (Mormoops blainvillei)
Ghost-faced Bat (M.megalophylla)
Thomas’s Naked-backed Bat (Pteronotus fulvus)
Mesoamerican Mustached Bat (P.mesoamericanus)
Common Mustached Bat (P.parnellii)
Puerto Rican Common Mustached Bat (P.portoricensis)
Sooty Mustached Bat (P.quadridens)
PHYLLOSTOMIDAE
California Leaf-nosed Bat (Macrotus californicus)
Waterhouse’s Leaf-nosed Bat (M.waterhousii)
Orange-throated Bat (Lampronycteris brachyotis)
Common Big-eared Bat (Micronycteris microtis)
Common Vampire Bat (Desmodus rotundus)
White-winged Vampire Bat (Diaemus youngii)
Hairy-legged Vampire Bat (Diphylla ecaudata)
Big-eared Wooly Bat (Chrotopterus auritus)
Cozumelan Golden Bat (Mimon cozumelae)
Leach’s Single-leaf Bat (Monophyllus redmani)
Western Long-tongued Bat (Glossophaga morenoi)
Merriam’s Long-tongued Bat (G.mutica)
Greater Long-nosed Bat (Leptonycteris nivalis)
Lesser Long-nosed Bat (L.yerbabuenae)
Antillean Fruit-eating Bat (Brachyphylla cavernarum)
Brown Flower Bat (Erophylla bombifrons)
Mexican Long-tongued Bat (Choeronycteris mexicana)
Sowell’s Short-tailed Bat (Carollia sowelli)
Honduras Yellow-shouldered Bat (Sturnira hondurensis)
Little Yellow-shouldered Bat (S.lilium)
Northern Yellow-shouldered Bat (S.parvidens)
Hairy Fruit-eating Bat (Artibeus hirsutus)
Jamaican Fruit-eating Bat (A.jamaicensis)
Great Fruit-eating Bat (A.lituratus)
Aztec Fruit-eating Bat (Dermanura azteca)
Pygmy Fruit-eating Bat (D.phaeotis)
Toltec Fruit-eating Bat (D.tolteca)
Cuban Fig-eating Bat (Phyllops falcatus)
NATALIDAE
Cuban Funnel-eared Bat (Chilonatalus micropus)
Mexican Greater Funnel-eared Bat (Natalus mexicanus)
MOLOSSIDAE
Alvarez’s Mastiff Bat (Molossus alvarezi)
Northern Black Mastiff Bat (M.nigricans)
Pocketed Free-tailed Bat (Nyctinomops femorosaccus)
Big Free-tailed Bat (N.macrotis)
Florida Bonneted Bat (Eumops floridanus)
Greater Bonneted Bat (E.perotis)
Brazilian Free-tailed Bat (Tadarida brasiliensis)
VESPERTILIONIDAE
Silver-haired Bat (Lasionycteris noctivagans)
Argentine Brown Bat (Eptesicus furinalis)
Big Brown Bat (E.fuscus)
Western Pipistrelle (Parastrellus hesperus)
Eastern Pipistrelle (Perimyotis subflavus)
Van Gelder’s Bat (Bauerus dubiaquercus)
Pallid Bat (Antrozous pallidus)
Yucatan Yellow Bat (Rhogeessa aenea)
Allen’s Yellow Bat (R.alleni)
Little Yellow Bat (R.parvula)
Mexican Big-eared Bat (Corynorhinus mexicanus)
Rafinesque’s Big-eared Bat (C.rafinesquii)
Townsend’s Big-eared Bat (C.townsendii)
Allen’s Big-eared Bat (Idionycteris phyllotis)
Spotted Bat (Euderma maculatum)
Hoary Bat (Aeorestes cinereus)
Western Yellow Bat (Dasypterus xanthinus)
Eastern Red Bat (Lasiurus borealis)
Desert Red Bat (L.frantzii)
Seminole Bat (L.seminolus)
Evening Bat (Nycticeius humeralis)
Southwestern Myotis (Myotis auriculus)
Southeastern Myotis (M.austroriparius)
California Myotis (M.californicus)
Western Small-footed Myotis (M.ciliolabrum)
Long-eared Myotis (M.evotis)
Gray Myotis (M.grisescens)
Eastern Small-footed Myotis (M.leibii)
Little Brown Bat (M.lucifugus)
Arizona Myotis (M.occultus)
Northern Hairy-legged Myotis (M.pilosatibialis)
Flat-headed Myotis (M.planiceps)
Northern Myotis (M.septentrionalis)
Indiana Bat (M.sodalis)
Fringed Myotis (M.thysanodes)
Cave Myotis (M.velifer)
Fish-eating Bat (M.vivesi)
Long-legged Myotis (M.volans)
Yuma Myotis (M.yumanensis)
FELIDAE
Canada Lynx (Lynx canadensis)
Bobcat (L.rufus)
Domestic Cat (Felis catus)
CANIDAE
Grey Fox (Urocyon cinereoargenteus)
Island Fox (U.littoralis)
Kit Fox (Vulpes macrotis)
Swift Fox (V.velox)
Red Fox (V.vulpes)
Coyote (Canis latrans)
Gray Wolf (C.lupus)
Eastern Wolf (C.lycaon)
Red Wolf (C.rufus)
URSIDAE
American Black Bear (Ursus americanus)
Brown Bear (U.arctos)
Polar Bear (U.maritimus)
OTARIIDAE
Northern Fur Seal (Callorhinus ursinus)
Steller Sea Lion (Eumetopias jubatus)
Californian Sea Lion (Zalophus californianus)
PHOCIDAE
Northern Elephant Seal (Mirounga angustirostris)
Grey Seal (Halichoerus grypus)
Harp Seal (Pagophilus groenlandicus)
Harbour Seal (Phoca vitulina)
Ringed Seal (Pusa hispida)
PROCYONIDAE
Ringtail (Bassariscus astutus)
White-nosed Coati (Nasua narica)
South American Coati (N.nasua)
Kinkajou (Potos flavus)
Northern Raccoon (Procyon lotor)
Pygmy Raccoon (P.pygmaeus)
MEPHITIDAE
American Hog-nosed Skunk (Conepatus leuconotus)
Hooded Skunk (Mephitis macroura)
Striped Skunk (M.mephitis)
Western Spotted Skunk (Spilogale gracilis)
Plains Spotted Skunk (S.interrupta)
MUSTELIDAE
American Badger (Taxidea taxus)
Fisher (Pekania pennanti)
American Marten (Martes americana)
North American Otter (Lontra canadensis)
Sea Otter (Enhydra lutris)
Black-footed Ferret (Mustela nigripes)
Long-tailed Weasel (Neogale frenata)
American Mink (N.vison)
EQUIDAE
Domestic Donkey (Equus asinus)
Domestic Horse (E.caballus)
SUIDAE
Domestic Pig (Sus domesticus)
TAYASSUIDAE
Collared Peccary (Dicotyles tajacu)
CERVIDAE
Fallow Deer (Dama dama)
Wapiti (Cervus canadensis)
Red Deer (C.elaphus)
Moose (Alces alces)
Caribou (Rangifer tarandus)
Mule Deer (Odocoileus hemionus)
White-tailed Deer (O.virginianus)
BOVIDAE
American Bison (Bos bison)
Mountain Goat (Oreamnos americanus)
Bighorn Sheep (Ovis canadensis)
Dall’s Sheep (O.dalli)
ANTILOCAPRIDAE
Pronghorn (Antilocapra americana)
BALAENIDAE
North Atlantic Right Whale (Eubalaena glacialis)
ESCHRICHTIIDAE
Gray Whale (Eschrichtius robustus)
BALAENOPTERIDAE
Common Minke Whale (Balaenoptera acutorostrata)
Sei Whale (B.borealis)
Blue Whale (B.musculus)
Fin Whale (B.physalus)
Humpback Whale (Megaptera novaeangliae)
ZIPHIIDAE
Gervais’ Beaked Whale (Mesoplodon europaeus)
MONODONTIDAE
Narwhal (Monodon monoceros)
Beluga (Delphinapterus leucas)
DELPHINIDAE
Atlantic White-sided Dolphin (Leucopleurus acutus)
White-beaked Dolphin (Lagenorhynchus albirostris)
Pacific White-sided Dolphin (Sagmatias obliquidens)
Orca (Orcinus orca)
Short-beaked Common Dolphin (Delphinus delphis)
Atlantic Spotted Dolphin (Stenella frontalis)
Indo-pacific Bottlenose Dolphin (Tursiops aduncus)
Common Bottlenose Dolphin (T.truncatus)
Long-finned Pilot Whale (Globicephala melas) (?)
Risso’s Dolphin (Grampus griseus)
Northern Right Whale Dolphin (Lissodelphis borealis)
PHOCOENIDAE
Harbour Porpoise (Phocoena phocoena)
Dall’s Porpoise (Phocoenoides dalli)

431 SPECIES