List of mammals in the United States

This is a list of the mammal species recorded in the United States. There are 424 mammal species in the United States, of which 3 are critically endangered, 15 are endangered, 23 are vulnerable, and 2 are near-threatened.3 of the species listed for the United States are extinct and 1 can no longer be found in the wild. [This list is derived from the IUCN Red List which lists species of mammals and includes those mammals that have recently been classified as extinct (since 1500 AD). The taxonomy and naming of the individual species is based on those used in existing Wikipedia articles as of 21 May 2007 and supplemented by the common names and taxonomy from the IUCN, Smithsonian Institute, or University of Michigan where no Wikipedia article was available.]

The following tags are used to highlight each species' conservation status as assessed by the IUCN:

Some species were assessed using an earlier set of criteria. Species assessed using this system have the following instead of Near Threatened and Least Concern categories:

ubclass: Theria

Infraclass: Eutheria

Order: Sirenia (manatees and dugongs)

----Sirenia is an order of fully aquatic, herbivorous mammals that inhabit rivers, estuaries, coastal marine waters, swamps, and marine wetlands. All four species are endangered.

*Family: Trichechidae
**Genus: Trichechus
*** West Indian Manatee "Trichechus manatus" VU

Order: Cingulata (armadillos)

----The armadillos are small mammals with a bony armored shell. There are around 20 extant species.They are native to the Americas. There are around 20 extant species.

*Family: Dasypodidae (armadillos)
**Subfamily: Dasypodinae
***Genus: Dasypus
**** Nine-banded Armadillo "Dasypus novemcinctus" LC

Order: Rodentia (rodents)

----Rodents make up the largest order of mammals, with over 40 percent of mammalian species. They have two incisors in the upper and lower jaw which grow continually and must be keep short by gnawing. Most rodents are small though the capybara can weigh up to 45 kg (100 lb).

*Suborder: Hystricognathi
**Family: Erethizontidae (New World porcupines)
***Subfamily: Erethizontinae
****Genus: Erethizon
***** North American Porcupine "Erethizon dorsatum" LR/lc
*Suborder: Sciurognathi
**Family: Aplodontidae (mountain beaver)
***Genus: Aplodontia
**** Mountain Beaver "Aplodontia rufa" LR/nt
**Family: Castoridae (beavers)
***Genus: Castor
**** American Beaver "Castor canadensis" LR/lc
**Family: Sciuridae (squirrels)
***Subfamily: Sciurinae
****Tribe: Sciurini
*****Genus: Sciurus
****** Abert's Squirrel "Sciurus aberti" LR/lc
****** Arizona Gray Squirrel "Sciurus arizonensis" LR/nt
****** Eastern Gray Squirrel "Sciurus carolinensis" LR/lc
****** Western Gray Squirrel "Sciurus griseus" LR/lc
****** Mexican Fox Squirrel "Sciurus nayaritensis" LR/lc
****** Fox Squirrel "Sciurus niger" LR/lc
*****Genus: Tamiasciurus
****** Douglas Squirrel "Tamiasciurus douglasii" LR/lc
****** American Red Squirrel "Tamiasciurus hudsonicus" LR/lc
****Tribe: Pteromyini
*****Genus: Glaucomys
****** Northern flying squirrel "Glaucomys sabrinus" LR/lc
****** Southern flying squirrel "Glaucomys volans" LR/lc
***Subfamily: Xerinae
****Tribe: Marmotini
*****Genus: Ammospermophilus
****** Harris's Antelope Squirrel "Ammospermophilus harrisii" LR/lc
****** Texas Antelope Squirrel "Ammospermophilus interpres" LR/lc
****** White-tailed Antelope Squirrel "Ammospermophilus leucurus" LR/lc
****** San Joaquin Antelope Squirrel "Ammospermophilus nelsoni" EN
*****Genus: Cynomys
****** Gunnison's Prairie Dog "Cynomys gunnisoni" LR/lc
****** White-tailed Prairie Dog "Cynomys leucurus" LR/lc
****** Black-tailed Prairie Dog "Cynomys ludovicianus" LR/nt
****** Utah Prairie Dog "Cynomys parvidens" LR/cd
*****Genus: Marmota
****** Alaska Marmot "Marmota broweri" LR/lc
****** Hoary Marmot "Marmota caligata" LR/lc
****** Yellow-bellied Marmot "Marmota flaviventris" LR/lc
****** Groundhog "Marmota monax" LR/lc
****** Olympic Marmot "Marmota olympus" LR/lc
*****Genus: Spermophilus
****** Uinita Ground Squirrel "Spermophilus armatus" LR/lc
****** California Ground Squirrel "Spermophilus beecheyi" LR/lc
****** Belding's Ground Squirrel "Spermophilus beldingi" LR/lc
****** Idaho Ground Squirrel "Spermophilus brunneus" EN
****** Merriam's Ground Squirrel "Spermophilus canus" LR/lc
****** Columbian Ground Squirrel "Spermophilus columbianus" LR/lc
****** Wyoming Ground Squirrel "Spermophilus elegans" LR/lc
****** Franklin's ground squirrel "Spermophilus franklinii" VU
****** Golden-mantled Ground Squirrel "Spermophilus lateralis" LR/lc
****** Mexican Ground Squirrel "Spermophilus mexicanus" LR/lc
****** Mohave Ground Squirrel "Spermophilus mohavensis" VU
****** Piute Ground Squirrel "Spermophilus mollis" LR/lc
****** Arctic Ground Squirrel "Spermophilus parryii" LR/lc
****** Richardson's Ground Squirrel "Spermophilus richardsonii" LR/lc
****** Cascade Golden-mantled Ground Squirrel "Spermophilus saturatus" LR/lc
****** Spotted Ground Squirrel "Spermophilus spilosoma" LR/lc
****** Round-tailed Ground Squirrel "Spermophilus tereticaudus" LR/lc
****** Townsend's Ground Squirrel "Spermophilus townsendii" DD
****** Thirteen-lined ground squirrel "Spermophilus tridecemlineatus" LR/lc
****** Rock Squirrel "Spermophilus variegatus" LR/lc
****** Washington Ground Squirrel "Spermophilus washingtoni" VU
*****Genus: Tamias
****** Alpine Chipmunk "Tamias alpinus" LR/lc
****** Yellow-pine Chipmunk "Tamias amoenus" LR/lc
****** Gray-footed Chipmunk "Tamias canipes" LR/nt
****** Gray-collared Chipmunk "Tamias cinereicollis" LR/lc
****** Cliff Chipmunk "Tamias dorsalis" LR/lc
****** Merriam's Chipmunk "Tamias merriami" LR/lc
****** Least Chipmunk "Tamias minimus" LR/lc
****** California Chipmunk "Tamias obscurus" LR/lc
****** Yellow-cheeked Chipmunk "Tamias ochrogenys" LR/lc
****** Palmer's Chipmunk "Tamias palmeri" VU
****** Panamint Chipmunk "Tamias panamintinus" LR/lc
****** Long-eared Chipmunk "Tamias quadrimaculatus" LR/lc
****** Colorado Chipmunk "Tamias quadrivittatus" LR/lc
****** Red-tailed Chipmunk "Tamias ruficaudus" LR/lc
****** Hopi chipmunk "Tamias rufus" LR/lc
****** Allen's Chipmunk "Tamias senex" LR/lc
****** Siskiyou Chipmunk "Tamias siskiyou" LR/lc
****** Sonoma Chipmunk "Tamias sonomae" LR/lc
****** Lodgepole Chipmunk "Tamias speciosus" LR/lc
****** Eastern Chipmunk "Tamias striatus" LR/lc
****** Townsend's Chipmunk "Tamias townsendii" LR/lc
****** Uinta Chipmunk "Tamias umbrinus" LR/lc
**Family: Geomyidae
***Genus: Geomys
**** Desert Pocket Gopher "Geomys arenarius" LR/nt
**** Plains Pocket Gopher "Geomys bursarius" LR/lc
**** Texas Pocket Gopher "Geomys personatus" LR/nt
**** Southeastern Pocket Gopher "Geomys pinetis" LR/lc
**** Llano Pocket Gopher "Geomys texensis" LR/nt
***Genus: Pappogeomys
**** Yellow-faced Pocket Gopher "Pappogeomys castanops" LR/lc
***Genus: Thomomys
**** Botta's pocket gopher "Thomomys bottae" LR/lc
**** Camas Pocket Gopher "Thomomys bulbivorus" LR/lc
**** Wyoming Pocket Gopher "Thomomys clusius" LR/lc
**** Idaho Pocket Gopher "Thomomys idahoensis" LR/nt
**** Mazama Pocket Gopher "Thomomys mazama" LR/nt
**** Mountain Pocket Gopher "Thomomys monticola" LR/lc
**** Northern Pocket Gopher "Thomomys talpoides" LR/lc
**** Townsend's Pocket Gopher "Thomomys townsendii" LR/lc
**** Southern Pocket Gopher "Thomomys umbrinus" LR/lc
**Family: Heteromyidae
***Subfamily: Dipodomyinae
****Genus: Dipodomys
***** Agile Kangaroo Rat "Dipodomys agilis" LR/lc
***** California Kangaroo Rat "Dipodomys californicus" LR/lc
***** Gulf Coast Kangaroo Rat "Dipodomys compactus" LR/lc
***** Desert Kangaroo Rat "Dipodomys deserti" LR/lc
***** Texas Kangaroo Rat "Dipodomys elator" VU
***** Heermann's Kangaroo Rat "Dipodomys heermanni" LR/lc
***** Giant Kangaroo Rat "Dipodomys ingens" CR
***** Merriam's Kangaroo Rat "Dipodomys merriami" LR/lc
***** Chisel-toothed Kangaroo Rat "Dipodomys microps" LR/lc
***** Fresno Kangaroo Rat "Dipodomys nitratoides" LR/nt
***** Ord's Kangaroo Rat "Dipodomys ordii" LR/lc
***** Panamint Kangaroo Rat "Dipodomys panamintinus" LR/lc
***** Phillips's Kangaroo Rat "Dipodomys spectabilis" LR/lc
***** Stephens' Kangaroo Rat "Dipodomys stephensi" LR/cd
***** Narrow-faced Kangaroo Rat "Dipodomys venustus" LR/lc
****Genus: Microdipodops
***** Dark Kangaroo Mouse "Microdipodops megacephalus" LR/lc
***** Pale Kangaroo Mouse "Microdipodops pallidus" LR/lc
***Subfamily: Heteromyinae
****Genus: Liomys
***** Mexican Spiny Pocket Mouse "Liomys irroratus" LR/lc
***Subfamily: Perognathinae
****Genus: Chaetodipus
***** Bailey's Pocket Mouse "Chaetodipus baileyi" LR/lc
***** California Pocket Mouse "Chaetodipus californicus" LR/lc
***** San Diego Pocket Mouse "Chaetodipus fallax" LR/lc
***** Long-tailed Pocket Mouse "Chaetodipus formosus" LR/lc
***** Hispid pocket mouse "Chaetodipus hispidus" LR/lc
***** Rock pocket mouse "Chaetodipus intermedius" LR/lc
***** Nelson's Pocket Mouse "Chaetodipus nelsoni" LR/lc
***** Desert pocket mouse "Chaetodipus penicillatus" LR/lc
***** Spiny Pocket Mouse "Chaetodipus spinatus" LR/lc
****Genus: Perognathus
***** White-eared Pocket Mouse "Perognathus alticola" LR/nt
***** Arizona Pocket Mouse "Perognathus amplus" LR/nt
***** Olive-backed Pocket Mouse "Perognathus fasciatus" LR/lc
***** Plains Pocket Mouse "Perognathus flavescens" LR/lc
***** Silky Pocket Mouse "Perognathus flavus" LR/lc
***** San Joaquin Pocket Mouse "Perognathus inornatus" LR/lc
***** Little Pocket Mouse "Perognathus longimembris" LR/lc
***** Great Basin Pocket Mouse "Perognathus merriami" LR/lc
***** Great Basin Pocket Mouse "Perognathus parvus" LR/lc
***** Yellow-eared Pocket Mouse "Perognathus xanthanotus" LR/lc
**Family: Dipodidae (jerboas)
***Subfamily: Zapodinae
****Genus: Napaeozapus
***** Woodland jumping mouse "Napaeozapus insignis" LR/lc
****Genus: Zapus
***** Meadow jumping mouse "Zapus hudsonius" LR/lc
***** Pacific Jumping Mouse "Zapus princeps" LR/lc
***** Pacific Jumping Mouse "Zapus trinotatus" LR/nt
**Family: Cricetidae
***Subfamily: Arvicolinae
****Genus: Arborimus
***** White-footed Vole "Arborimus albipes" DD
***** Red Tree Vole "Arborimus longicaudus" LR/lc
***** California Red Tree Mouse "Arborimus pomo" DD
****Genus: Clethrionomys
***** Western Red-backed Vole "Clethrionomys californicus" LR/lc
***** Southern Red-backed Vole "Clethrionomys gapperi" LR/lc
***** Northern Red-backed Vole "Clethrionomys rutilus" LR/lc
****Genus: Dicrostonyx
***** St. Lawrence Island Collared Lemming "Dicrostonyx exsul" DD
***** Northern Collared Lemming "Dicrostonyx groenlandicus" LR/lc
***** Nelson's Collred Lemming "Dicrostonyx nelsoni" LR/lc
***** Bering Collared Lemming "Dicrostonyx rubricatus" LR/lc
***** Unalaska Collared Lemming "Dicrostonyx unalascensis" DD
****Genus: Lemmiscus
***** Sagebrush Vole "Lemmiscus curtatus" LR/lc
****Genus: Lemmus
***** Brown Lemming "Lemmus sibiricus" LR/lc
****Genus: Microtus
***** Insular Vole "Microtus abbreviatus" DD
***** Beach Vole "Microtus breweri" LR/nt
***** California Vole "Microtus californicus" LR/lc
***** Gray-tailed Vole "Microtus canicaudus" LR/lc
***** Rock Vole "Microtus chrotorrhinus" LR/lc
***** Long-tailed Vole "Microtus longicaudus" LR/lc
***** Mexican Vole "Microtus mexicanus" VU
***** Singing Vole "Microtus miurus" LR/lc
***** Mogollon Vole "Microtus mogollonensis" LR/lc
***** Montane Vole "Microtus montanus" LR/lc
***** Prairie Vole "Microtus ochrogaster" LR/lc
***** Tundra Vole "Microtus oeconomus" LC
***** Creeping Vole "Microtus oregoni" LR/lc
***** Meadow Vole "Microtus pennsylvanicus" LR/lc
***** Woodland Vole "Microtus pinetorum" LR/lc
***** Water Vole (North America) "Microtus richardsoni" LR/lc
***** Townsend's Vole "Microtus townsendii" LR/nt
***** Taiga Vole "Microtus xanthognathus" LR/lc
****Genus: Neofiber
***** Round-tailed Muskrat "Neofiber alleni" LR/nt
****Genus: Ondatra
***** Muskrat "Ondatra zibethicus" LR/lc
****Genus: Phenacomys
***** Western Heather Vole "Phenacomys intermedius" LR/lc
***** Eastern Heather Vole "Phenacomys ungava" LR/lc
****Genus: Synaptomys
***** Northern Bog Lemming "Synaptomys borealis" LR/lc
***** Southern Bog Lemming "Synaptomys cooperi" LR/lc
***Subfamily: Neotominae
****Genus: Baiomys
***** Northern Pygmy Mouse "Baiomys taylori" LR/lc
****Genus: Neotoma
***** White-throated Woodrat "Neotoma albigula" LR/lc
***** Bushy-tailed Woodrat "Neotoma cinerea" LR/lc
***** Arizona Woodrat "Neotoma devia" LR/lc
***** Eastern Woodrat "Neotoma floridana" LR/lc
***** Dusky-footed Woodrat "Neotoma fuscipes" LR/lc
***** Desert Woodrat "Neotoma lepida" LR/lc
***** "Neotoma magister" LR/nt
***** Mexican Woodrat "Neotoma mexicana" LR/lc
***** Southern Plains Woodrat "Neotoma micropus" LR/lc
***** Stephen's Woodrat "Neotoma stephensi" LR/lc
****Genus: Ochrotomys
***** Golden Mouse (rodent) "Ochrotomys nuttalli" LR/lc
****Genus: Peromyscus
***** Texas Mouse "Peromyscus attwateri" LR/lc
***** Brush Mouse "Peromyscus boylii" LR/lc
***** California Mouse "Peromyscus californicus" LR/lc
***** Canyon mouse "Peromyscus crinitus" LR/lc
***** Cactus Mouse "Peromyscus eremicus" LR/lc
***** Cotton Mouse "Peromyscus gossypinus" LR/lc
***** White-footed Mouse "Peromyscus leucopus" LR/lc
***** Deer Mouse "Peromyscus maniculatus] " LR/lc
***** Black-eared Mouse "Peromyscus melanotis" LR/lc
***** Mesquite Mouse "Peromyscus merriami" LR/lc
***** Northern Rock Mouse "Peromyscus nasutus" LR/lc
***** Columbian Mouse "Peromyscus oreas" LR/lc
***** White-ankled Mouse "Peromyscus pectoralis" LR/lc
***** Oldfield Mouse "Peromyscus polionotus" LR/lc
***** Sitka Mouse "Peromyscus sitkensis" LR/lc
***** Pinyon Mouse "Peromyscus truei" LR/lc
****Genus: Podomys
***** Florida Mouse "Podomys floridanus" VU
****Genus: Reithrodontomys
***** Fulvous Harvest Mouse "Reithrodontomys fulvescens" LR/lc
***** Eastern Harvest Mouse "Reithrodontomys humilis" LR/lc
***** Western Harvest Mouse "Reithrodontomys megalotis" LR/lc
***** Plains Harvest Mouse "Reithrodontomys montanus" LR/lc
***** Salt Marsh Harvest Mouse "Reithrodontomys raviventris" VU
***Subfamily: Sigmodontinae
****Genus: Onychomys
***** Chihuahuan Grasshopper Mouse "Onychomys arenicola" LR/lc
***** Grasshopper mouse "Onychomys leucogaster" LR/lc
***** Grasshopper mouse "Onychomys torridus" LR/lc
****Genus: Oryzomys
***** Marsh Rice Rat "Oryzomys palustris" LR/lc
****Genus: Sigmodon
***** Arizona Cotton Rat "Sigmodon arizonae" LR/lc
***** Tawny-bellied Cotton Rat "Sigmodon fulviventer" LR/lc
***** Hispid Cotton Rat "Sigmodon hispidus" LR/lc
***** Yellow-nosed Cotton Rat "Sigmodon ochrognathus" LR/lc
**Family: Muridae (mice, rats, voles, gerbils, hamsters, etc.)
***Subfamily: Murinae
****Genus: Rattus
***** Polynesian Rat "Rattus exulans" LR/lc

Order: Lagomorpha (lagomorphs)

----The lagomorphs comprise two families, Leporidae (hares and rabbits), and Ochotonidae (pikas). Though they can resemble rodents, and were classified as a superfamily in that order until the early twentieth century, they have since been considered a separate order. They differ from rodents in a number of physical characteristics, such as having four incisors in the upper jaw rather than two.

*Family: Ochotonidae (pikas)
**Genus: Ochotona
*** Collared Pika "Ochotona collaris" LR/lc
*** American Pika "Ochotona princeps" LR/lc
*Family: Leporidae (rabbits, hares)
**Genus: Brachylagus
*** Pygmy Rabbit "Brachylagus idahoensis" LR/nt
**Genus: Sylvilagus
*** Swamp Rabbit "Sylvilagus aquaticus" LR/lc
*** Desert Cottontail "Sylvilagus audubonii" LR/lc
*** Brush Rabbit "Sylvilagus bachmani" LR/lc
*** Eastern Cottontail "Sylvilagus floridanus" LR/lc
*** Mountain Cottontail "Sylvilagus nuttallii" LR/lc
*** Appalachian Cottontail "Sylvilagus obscurus" LR/lc
*** Marsh Rabbit "Sylvilagus palustris" LR/lc
*** New England Cottontail "Sylvilagus transitionalis" VU
**Genus: Lepus
*** Antelope Jackrabbit "Lepus alleni" LR/lc
*** Snowshoe Hare "Lepus americanus" LR/lc
*** Black-tailed Jackrabbit "Lepus californicus" LR/lc
*** White-sided Jackrabbit "Lepus callotis" LR/nt
*** Alaskan Hare "Lepus othus" LR/lc
*** White-tailed Jackrabbit "Lepus townsendii" LR/lc

Order: Soricomorpha (shrews, moles, and soledons)

----The "shrew-forms" are insectivorous mmmals. The shrews and soledons closely resemble mice while the moles are stout bodied burrowers.

*Family: Soricidae (shrews)
**Subfamily: Soricinae
***Tribe: Blarinini
****Genus: Blarina
***** Northern Short-tailed Shrew "Blarina brevicauda" LR/lc
***** Southern Short-tailed Shrew "Blarina carolinensis" LR/lc
***** Elliot's Short-tailed Shrew "Blarina hylophaga" LR/lc
****Genus: Cryptotis
***** North American Least Shrew "Cryptotis parva" LR/lc
***Tribe: Notiosoricini
****Genus: Notiosorex
***** Crawford's Gray Shrew "Notiosorex crawfordi" LR/lc
***Tribe: Soricini
****Genus: Sorex
***** Glacier Bay Water Shrew "Sorex alaskanus" LR/lc
***** Arctic Shrew "Sorex arcticus" LR/lc
***** Arizona Shrew "Sorex arizonae" VU
***** Baird's Shrew "Sorex bairdii" LR/lc
***** Marsh Shrew "Sorex bendirii" LR/lc
***** Cinereus Shrew "Sorex cinereus" LR/lc
***** Long-tailed Shrew "Sorex dispar" LR/lc
***** Smoky Shrew "Sorex fumeus" LR/lc
***** Prairie Shrew "Sorex haydeni" LR/lc
***** American Pygmy Shrew "Sorex hoyi" LR/lc
***** Pribilof Island Shrew "Sorex hydrodromus" EN
***** St Lawrence Island Shrew "Sorex jacksoni" EN
***** Southeastern Shrew "Sorex longirostris" LR/lc
***** Mount Lyell Shrew "Sorex lyelli" LR/lc
***** Merriam's Shrew "Sorex merriami" LR/lc
***** Montane Shrew "Sorex monticolus" LR/lc
***** Dwarf Shrew "Sorex nanus" LR/lc
***** Ornate Shrew "Sorex ornatus" LR/lc
***** Pacific Shrew "Sorex pacificus" LR/lc
***** American Water Shrew "Sorex palustris" LR/lc
***** Preble's Shrew "Sorex preblei" LR/lc
***** Fog Shrew "Sorex sonomae" LR/lc
***** Inyo Shrew "Sorex tenellus" LR/lc
***** Trowbridge's Shrew "Sorex trowbridgii" LR/lc
***** Tundra Shrew "Sorex tundrensis" LR/lc
***** Barren Ground Shrew "Sorex ugyunak" LR/lc
***** Vagrant Shrew "Sorex vagrans" LR/lc
*Family: Talpidae (moles)
**Subfamily: Scalopinae
***Tribe: Condylurini
****Genus: Condylura
***** Star-nosed Mole "Condylura cristata" LR/lc
***Tribe: Scalopini
****Genus: Parascalops
***** Hairy-tailed Mole "Parascalops breweri" LR/lc
****Genus: Scalopus
***** Eastern Mole "Scalopus aquaticus" LR/lc
****Genus: Scapanus
***** Broad-footed Mole "Scapanus latimanus" LR/lc
***** Coast Mole "Scapanus orarius" LR/lc
***** Townsend's Mole "Scapanus townsendii" LR/lc
**Subfamily: Talpinae
***Tribe: Neurotrichini
****Genus: Neurotrichus
***** Shrew-mole "Neurotrichus gibbsii" LR/lc

Order: Chiroptera (bats)

[
Western mastiff bat] The bats' most distinguishing feature is that their forelimbs are developed as wings, making them the only mammals in the world naturally capable of flight. Bat species account for about 20% of all mammals.

*Family: Vespertilionidae
**Subfamily: Myotinae
***Genus: Lasionycteris
**** Silver-haired bat "Lasionycteris noctivagans" LR/lc
***Genus: Myotis
**** Southwestern Myotis "Myotis auriculus" LR/lc
**** Southeastern myotis "Myotis austroriparius" LR/lc
**** California Myotis "Myotis californicus" LR/lc
**** Western Small-footed Myotis "Myotis ciliolabrum" LR/lc
**** Long-eared Myotis "Myotis evotis" LR/lc
**** Gray Bat "Myotis grisescens" EN
**** Keen's Myotis "Myotis keenii" LR/lc
**** Eastern small-footed myotis "Myotis leibii" LR/lc
**** Little brown bat "Myotis lucifugus" LR/lc
**** Northern long-eared myotis "Myotis septentrionalis" LR/lc
**** Indiana bat "Myotis sodalis" EN
**** Fringed Myotis "Myotis thysanodes" LR/lc
**** Cave Myotis "Myotis velifer" LR/lc
**** Long-legged Myotis "Myotis volans" LR/lc
**** Yuma Myotis "Myotis yumanensis" LR/lc
**Subfamily: Vespertilioninae
***Genus: Antrozous
**** Pallid bat "Antrozous pallidus" LR/lc
***Genus: Eptesicus
**** Big brown bat "Eptesicus fuscus" LR/lc
***Genus: Euderma
**** Spotted bat "Euderma maculatum" LR/lc
***Genus: Idionycteris
**** Allen's Big-eared Bat "Idionycteris phyllotis" LR/lc
***Genus: Lasiurus
**** Eastern Red Bat "Lasiurus borealis" LR/lc
**** Hoary bat "Lasiurus cinereus" LR/lc
**** Southern Yellow Bat "Lasiurus ega" LR/lc
**** Northern Yellow Bat "Lasiurus intermedius" LR/lc
**** Seminole Bat "Lasiurus seminolus" LR/lc
**** Western Yellow Bat "Lasiurus xanthinus" LR/lc
***Genus: Nycticeius
**** Vesper bat "Nycticeius humeralis" LR/lc
***Genus: Pipistrellus
**** Western Pipistrelle "Pipistrellus hesperus" LR/lc
**** Eastern Pipistrelle "Pipistrellus subflavus" LR/lc
***Genus: Plecotus
**** Rafinesque's Big-eared Bat "Plecotus rafinesquii" VU
**** Townsend's Big-eared Bat "Plecotus townsendii" VU
*Family: Molossidae
**Genus: Eumops
*** Wagner's Bonneted Bat "Eumops glaucinus" LR/lc
*** Western mastiff bat "Eumops perotis" LR/lc
*** Underwood's Bonneted Bat "Eumops underwoodi" LR/nt
**Genus: Molossus
*** Velvety Free-tailed Bat "Molossus molossus" LR/lc
**Genus: Nyctinomops
*** Pocketed Free-tailed Bat "Nyctinomops femorosaccus" LR/lc
*** Big Free-tailed Bat "Nyctinomops macrotis" LR/lc
**Genus: Tadarida
*** Mexican Free-tailed Bat "Tadarida brasiliensis" LR/nt
*Family: Mormoopidae
**Genus: Mormoops
*** Ghost-faced Bat "Mormoops megalophylla" LR/lc
*Family: Phyllostomidae
**Subfamily: Phyllostominae
***Genus: Macrotus
**** California Leaf-nosed Bat "Macrotus californicus" VU
**Subfamily: Glossophaginae
***Genus: Choeronycteris
**** Mexican Long-tongued Bat "Choeronycteris mexicana" LR/nt
***Genus: Leptonycteris
**** Southern Long-nosed Bat "Leptonycteris curasoae" VU
**** Greater Long-nosed Bat "Leptonycteris nivalis" EN
**Subfamily: Stenodermatinae
***Genus: Enchisthenes
**** Velvety Fruit-eating Bat "Enchisthenes hartii" LR/lc
**Subfamily: Desmodontinae
***Genus: Diphylla
**** Hairy-legged Vampire Bat "Diphylla ecaudata" LR/nt

Order: Cetacea (whales)

----

The order Cetacea includes whales, dolphins and porpoises. They are the mammals most fully adapted to aquatic life with a spindle-shaped nearly hairless body, protected by a thick layer of blubber, and forelimbs and tail modified to provide propulsion underwater.

*Suborder: Mysticeti
**Family: Balaenidae
***Genus: Balaena
**** Bowhead whale "Balaena mysticetus" LR/cd
***Genus: Eubalaena
**** North Atlantic Right Whale "Eubalaena glacialis" EN
**** North Pacific Right Whale "Eubalaena japonica" EN
**Family: Balaenopteridae
***Subfamily: Balaenopterinae
****Genus: Balaenoptera
***** Minke Whale "Balaenoptera acutorostrata" LR/nt
***** Sei Whale "Balaenoptera borealis" EN
***** Bryde's Whale "Balaenoptera edeni" DD
***** Blue Whale "Balaenoptera musculus" EN
***** Fin Whale "Balaenoptera physalus" EN
***Subfamily: Megapterinae
****Genus: Megaptera
***** Humpback Whale "Megaptera novaeangliae" VU
**Family: Eschrichtiidae
***Genus: Eschrichtius
**** Gray Whale "Eschrichtius robustus" LR/cd
*Suborder: Odontoceti
**Superfamily: Platanistoidea
***Family: Monodontidae
****Genus: Monodon
***** Narwhal "Monodon monoceros" DD
****Genus: Delphinapterus
***** Beluga "Delphinapterus leucas" VU
***Family: Phocoenidae
****Genus: Phocoena
***** Harbour Porpoise "Phocoena phocoena" VU
****Genus: Phocoenoides
***** Dall's Porpoise "Phocoenoides dalli" LR/cd
***Family: Physeteridae
****Genus: Physeter
***** Sperm Whale "Physeter macrocephalus" VU
***Family: Kogiidae
****Genus: Kogia
***** Pygmy Sperm Whale "Kogia breviceps" LR/lc
***** Dwarf Sperm Whale "Kogia sima" LR/lc
***Family: Ziphidae
****Genus: Ziphius
***** Cuvier's Beaked Whale "Ziphius cavirostris" DD
****Genus: Berardius
***** Baird's beaked whale "Berardius bairdii" LR/cd
****Subfamily: Hyperoodontidae
*****Genus: Hyperoodon
****** Northern Bottlenose whale "Hyperoodon ampullatus" LR/cd
*****Genus: Mesoplodon
****** Sowerby's Beaked Whale "Mesoplodon bidens" DD
****** Hubbs' Beaked Whale "Mesoplodon carlhubbsi" DD
****** Blainville's Beaked Whale "Mesoplodon densirostris" DD
****** Gervais' Beaked Whale "Mesoplodon europaeus" DD
****** Ginkgo-toothed Beaked Whale "Mesoplodon ginkgodens" DD
****** Perrin's Beaked Whale "Mesoplodon perrini" DD
****** True's Beaked Whale "Mesoplodon mirus" DD
****** Stejneger's Beaked Whale "Mesoplodon stejnegeri" DD
***Family: Delphinidae (marine dolphins)
****Genus: Steno
***** Rough-toothed Dolphin "Steno bredanensis" DD
****Genus: Tursiops
***** Bottlenose Dolphin "Tursiops truncatus" DD
****Genus: Stenella
***** Pantropical Spotted Dolphin "Stenella attenuata" LR/cd
***** Clymene Dolphin "Stenella clymene" DD
***** Striped Dolphin "Stenella coeruleoalba" LR/cd
***** Atlantic Spotted Dolphin "Stenella frontalis" DD
***** Spinner Dolphin "Stenella longirostris" LR/cd
****Genus: Delphinus
***** Long-nosed Common dolphin "Delphinus capensis" LR/lc
***** Short-nosed Common dolphin "Delphinus delphis" LR/lc
****Genus: Lagenodelphis
***** Fraser's Dolphin "Lagenodelphis hosei" DD
****Genus: Lagenorhynchus
***** Atlantic White-sided Dolphin "Lagenorhynchus acutus" LR/lc
***** White-beaked Dolphin "Lagenorhynchus albirostris" LR/lc
***** Pacific White-sided Dolphin "Lagenorhynchus obliquidens" LR/lc
****Genus: Lissodelphis
***** Northern Right Whale Dolphin "Lissodelphis borealis" LR/lc
****Genus: Grampus
***** Risso's Dolphin "Grampus griseus" DD
****Genus: Peponocephala
***** Melon-headed Whale "Peponocephala electra" LR/lc
****Genus: Feresa
***** Pygmy Killer Whale "Feresa attenuata" DD
****Genus: Pseudorca
***** False Killer Whale "Pseudorca crassidens" LR/lc
****Genus: Orcinus
***** Killer Whale "Orcinus orca" LR/cd
****Genus: Globicephala
***** Shot-finned Pilot whale "Globicephala macrorhynchus" LR/cd
***** Long-finned Pilot whale "Globicephala melas" LR/lc

Order: Carnivora (carnivores)

----The carnivores include over 260 species, the majority of which eat meat as their primary dietary item. Carnivores have a characteristic skull shape and dentition.

*Suborder: Feliformia
**Family: Felidae (cats)
***Subfamily: Felinae
****Genus: Felis
***** Wildcat "Felis silvestris" LC
****Genus: Leopardus
***** Ocelot "Leopardus pardalis" LC
***** Margay "Leopardus wiedii" LC
****Genus: Lynx
***** Canadian Lynx "Lynx canadensis" LC
***** Bobcat "Lynx rufus" LC
****Genus: Puma
***** Jaguarundi "Puma yaguarondi" LC
***** Cougar "Puma concolor" NT
***Subfamily: Pantherinae
****Genus: Panthera
***** Jaguar "Panthera onca" NT
*Suborder: Caniformia
**Family: Canidae (dogs)
***Genus: Alopex
**** Arctic fox "Alopex lagopus" LC
***Genus: Vulpes
**** Kit Fox "Vulpes macrotis" LC
**** Swift Fox "Vulpes velox" LC
**** Red Fox "Vulpes vulpes" LC
***Genus: Urocyon
**** Gray Fox "Urocyon cinereoargenteus" LC
**** Island Fox "Urocyon littoralis" CR
***Genus: Canis
**** Coyote "Canis latrans" LC
**** Gray Wolf "Canis lupus" LC
**** Red Wolf "Canis rufus" CR
**Family: Ursidae (bears)
***Genus: Ursus
**** American black bear "Ursus americanus" LR/lc
**** Brown Bear "Ursus arctos" LR/lc
**** Polar Bear "Ursus maritimus" VU
**Family: Procyonidae (raccoons)
***Genus: Bassariscus
**** Ringtail "Bassariscus astutus" LR/lc
***Genus: Procyon
**** Raccoon "Procyon lotor" LR/lc
***Genus: Nasua
**** White-nosed Coati "Nasua narica" LR/lc
**Family: Mustelidae (mustelids)
***Genus: Mustela
**** Ermine "Mustela erminea" LR/lc
**** Long-tailed Weasel "Mustela frenata" LR/lc
**** Black-footed Ferret "Mustela nigripes" EW
**** Least Weasel "Mustela nivalis" LR/lc
**** American Mink "Mustela vison" LR/lc
***Genus: Martes
**** American Marten "Martes americana" LR/lc
**** Fisher "Martes pennanti" LR/lc
***Genus: Gulo
**** Wolverine "Gulo gulo" VU
***Genus: Taxidea
**** American Badger "Taxidea taxus" LR/lc
***Genus: Lontra
**** River Otter "Lontra canadensis" LC
***Genus: Enhydra
**** Sea Otter "Enhydra lutris" EN
**Family: Otariidae (eared seals, sealions)
***Genus: Callorhinus
**** Northern Fur Seal "Callorhinus ursinus" VU
***Genus: Arctocephalus
**** Guadalupe Fur Seal "Arctocephalus townsendi" VU
***Genus: Eumetopias
**** Steller Sea Lion "Eumetopias jubatus" EN
***Genus: Zalophus
**** California Sea Lion "Zalophus californianus" LR/lc
**Family: Odobenidae
***Genus: Odobenus
**** Walrus "Odobenus rosmarus" LR/lc
**Family: Phocidae (earless seals)
***Genus: Cystophora
**** Hooded Seal "Cystophora cristata" LR/lc
***Genus: Erignathus
**** Bearded Seal "Erignathus barbatus" LR/lc
***Genus: Histriophoca
**** Ribbon Seal "Histriophoca fasciata" LR/lc
***Genus: Mirounga
**** Northern Elephant Seal "Mirounga angustirostris" LR/lc
***Genus: Monachus
**** Hawaiian Monk Seal "Monachus schauinslandi" EN
**** Caribbean Monk Seal "Monachus tropicalis" EX
***Genus: Phoca
**** Spotted Seal "Phoca largha" LR/lc
**** Harbor Seal "Phoca vitulina" LR/lc
***Genus: Pusa
**** Ringed Seal "Pusa hispida" LR/lc
**Family: Mephitidae
***Genus: Spilogale
**** Eastern Spotted Skunk "Spilogale putorius" LR/lc
***Genus: Mephitis
**** Hooded Skunk "Mephitis macroura" LR/lc
**** Striped Skunk "Mephitis mephitis" LR/lc
***Genus: Conepatus
**** Hog-nosed Skunk "Conepatus leuconotus" LR/lc

Order: Artiodactyla (even-toed ungulates)

----The even-toed ungulates are ungulates whose weight is borne about equally by the third and fourth toes, rather than mostly or entirely by the third as in perissodactyls. There are about 220 artiodactyl species, including many that are of great economic importance to humans.

*Family: Tayassuidae (peccaries)
**Genus: Tayassu
*** Collared Peccary "Tayassu tajacu" LR/lc
*Family: Cervidae (deer)
**Subfamily: Cervinae
***Genus: Cervus
**** Elk "Cervus canadensis" LR/lc
**Subfamily: Capreolinae
***Genus: Alces
**** Moose "Alces alces" LR/lc
***Genus: Odocoileus
**** Mule deer "Odocoileus hemionus" LR/lc
**** White-tailed deer "Odocoileus virginianus" LR/lc
***Genus: Rangifer
**** Caribou "Rangifer tarandus" LR/lc
*Family: Antilocapridae (pronghorn)
**Genus: Antilocapra
*** Pronghorn "Antilocapra americana" LR/lc
*Family: Bovidae (cattle, antelope, sheep, goats)
**Subfamily: Bovinae
***Genus: Bison
**** American Bison "Bos bison" LR/cd
**Subfamily: Caprinae
***Genus: Oreamnos
**** Mountain goat "Oreamnos americanus" LR/lc
***Genus: Ovis
**** Bighorn Sheep "Ovis canadensis" LR/cd
**** Dall Sheep "Ovis dalli" LR/lc

Infraclass: Metatheria

Order: Didelphimorphia (common opossums)

----

Didelphimorphia is the order of common opossums of the Western Hemisphere. Opossums probably diverged from the basic South American marsupials in the late Cretaceous or early Paleocene.They are small to medium-sized marsupials, about the size of a large house cat, with a long snout and prehensile tail.

*Family: Didelphidae (American opossums)
**Subfamily: Didelphinae
***Genus: Didelphis
**** Opossum "Didelphis virginiana" LR/lc

Notes

References

*cite web
url=http://www.iucnredlist.org/search/search.php?kingname=ANIMALIA&phyname=CHORDATA&claname=MAMMALIA&freetext=&modifier=phrase&criteria=wholedb&taxa_species=1&redlistCategory%5B0%5D=all&redlistAssessyear%5B0%5D=all&country%5B0%5D=US&aquatic%5B0%5D=all&regions%5B0%5D=all&habitats%5B0%5D=all&threats%5B0%5D=all&Submit_x=34&Submit_y=9&extendedResults=0&terrestrial=0&marine=0&freshwater=0&offset=0&sortorder%5B0%5D=spcscientificname&sortorder%5B1%5D=genname&sortorder%5B2%5D=spcname&sortorder%5B3%5D=spcauthor&sortorder%5B4%5D=spcinfrarank&sortorder%5B5%5D=spcinfraepithet&sortorder%5B6%5D=spcinfrarankauthor&sortorder%5B7%5D=spcstockname&sortorder%5B8%5D=comname_comp&sortorder%5B9%5D=rlcabb&sortorder%5B10%5D=rlscriteria&sortorder%5B11%5D=poptrend_code&sortorder%5B12%5D=rlcatcrit2001&sortorder%5B13%5D=spcrecid&sortorder%5B14%5D=kingname&debug=0&taxa_subspc=0&taxa_stock=0&newsort=Genus
title=The IUCN Red List of Threatened Species: Mammals of the United States
publisher=IUCN
date=2001
accessdaymonth = 22 May
accessyear=2007
*cite web
url=http://nmnhgoph.si.edu/msw/
title=Mammal Species of the World
publisher=Smithsonian National Museum of Natural History
date=2005
accessdaymonth = 22 May
accessyear=2007
*cite web
url=http://animaldiversity.ummz.umich.edu/site/index.html
title=Animal Diversity Web
publisher=University of Michigan Museum of Zoology
date=1995-2006
accessdaymonth = 22 May
accessyear=2007

ee also

*List of chordate orders
*List of regional mammals lists
*List of prehistoric mammals
*Mammal classification
*New mammal species