Family: Didelphidae

• Virginia opossum, Didelphis virginiana

Family: Dasypodidae

• Nine-banded armadillo, Dasypus novemcinctus

Family: Soricidae

• North American least shrew, Cryptotis parva
• Crawford's gray shrew, Notiosorex crawfordi
• Arizona shrew, Sorex arizonae
• Cinereus shrew, Sorex cinereus
• Merriam's shrew, Sorex merriami
• Montane shrew, Sorex monticolus
• New Mexico shrew, Sorex neomexicanus
• American water shrew, Sorex palustris
• Preble's shrew, Sorex preblei

Family: Molossidae

• Western mastiff bat, Eumops perotis
• Pocketed free-tailed bat, Nyctinomops femorosaccus
• Big free-tailed bat, Nyctinomops macrotis
• Mexican free-tailed bat, Tadarida brasiliensis

Family: Phyllostomidae

• Mexican long-tongued bat, Choeronycteris mexicana
• Greater long-nosed bat, Leptonycteris nivalis

Family: Vespertilionidae

• Hoary bat, Aeorestes cinereus
• Pallid bat, Antrozous pallidus
• Townsend's big-eared bat, Corynorhinus townsendii
• Big brown bat, Eptesicus fuscus
• Spotted bat, Euderma maculatum
• Allen's big-eared bat, Idionycteris phyllotis
• Silver-haired bat, Lasionycteris noctivagans
• Western red bat, Lasiurus blossevillii
• Eastern red bat, Lasiurus borealis
• Western yellow bat, Lasiurus xanthinus
• Southwestern myotis, Myotis auriculus
• California myotis, Myotis californicus
• Western small-footed myotis, Myotis ciliolabrum
• Long-eared myotis, Myotis evotis
• Little brown bat, Myotis lucifugus
• Arizona myotis, Myotis occultus
• Fringed myotis, Myotis thysanodes
• Long-legged myotis, Myotis yumanensis
• Western pipistrelle, Pipistrellus hersperus
• Eastern pipistrelle, Pipistrellus subflavus

Family: Leporidae

• Snowshoe hare, Lepus americanus
• Black-tailed jackrabbit, Lepus californicus
• White-sided jackrabbit, Lepus callotis
• White-tailed jackrabbit, Lepus townsendii
• Desert cottontail, Sylvilagus audubonii
• Eastern cottontail, Sylvilagus floridanus
• Robust cottontail, Sylvilagus holzneri
• Mountain cottontail, Sylvilagus nuttallii

Family: Ochotonidae

• American pika, Ochotona princeps

Family: Castoridae

• American beaver, Castor canadensis

Family: Geomyidae

• Yellow-faced pocket gopher, Cratogeomys castanops
• Desert pocket gopher, Geomys arenarius
• Plains pocket gopher, Geomys bursarius
• Knox Jones's pocket gopher, Geomys knoxjonesi
• Botta's pocket gopher, Thomomys bottae
• Northern pocket gopher, Thomomys talpoides
• Southern pocket gopher, Thomomys umbrinus

Family: Heteromyidae

• Bailey's pocket mouse, Chaetodipus balieyi
• Chihuahuan pocket mouse, Chaetodipus eremicus
• Hispid pocket mouse, Chaetodipus hispidus
• Rock pocket mouse, Chaetodipus intermedius
• Nelson's pocket mouse, Chaetodipus nelsoni
• Desert pocket mouse, Chaetodipus penicillatus
• Merriam's kangaroo rat, Dipodomys merriamii
• Ord's kangaroo rat, Dipodomys ordii
• Banner-tailed kangaroo rat, Dipodomys spectabilis
• Plains pocket mouse, Perognathus flavescens
• Silky pocket mouse, Perognathus flavus
• Merriam's pocket mouse, Perognathus merriami

Family: Cricetidae

• Northern pygmy mouse, Baiomys taylori
• Long-tailed vole, Microtus longicadus
• Mogollon vole, Microtus mogollonenis
• Montane vole, Microtus montanus
• Prairie vole, Microtus ochrogaster
• Meadow vole, Microtus pennsylvanicus
• Southern red-backed vole, Myodes gapperi
• White-throated woodrat, Neotoma albigula
• Bushy-tailed woodrat, Neotoma cinerea
• White-toothed woodrat, Neotoma leucodon
• Mexican woodrat, Neotoma mexicana
• Southern plains woodrat, Neotoma micropus
• Stephen's woodrat, Neotoma stephensi
• Common muskrat, Ondatra zibethicus
• Chihuahuan grasshopper mouse, Onychomys arenicola
• Northern grasshopper mouse, Onychomys leucogaster
• Southern grasshopper mouse, Onychomys torridus
• Brush deermouse, Peromyscus boylii
• Canyon deermouse, Peromyscus crinitus
• Cactus deermouse, Peromyscus eremicus
• Southern deermouse, Peromyscus labecula
• White-footed mouse, Peromyscus leucopus
• Northern rock mouse, Peromyscus nasutus
• White-ankled mouse, Peromyscus pectoralis
• Western deermouse, Peromyscus sonoriensis
• Pinyon mouse, Peromyscus truei
• Western heather vole, Phenacomys intermedius
• Fulvous harvest mouse, Reithrodontomys fulvescens
• Western harvest mouse, Reithrodontomys megalotis
• Plains harvest mouse, Reithrodontomys montanus
• Arizona cotton rat, Sigmodon arizonae
• Tawny-bellied cotton rat, Sigmodon fulviventer
• Hispid cotton rat, Sigmodon hispidus
• Yellow-nosed cotton rat, Sigmodon ochrognathus

Family: Muridae

• House mouse, Mus musculus introduced
• Norway rat, Rattus norvegicus introduced
• Black rat, Rattus rattus introduced

Family: Dipodidae

• Meadow jumping mouse, Zapus hudsonicus
• Western jumping mouse, Zapus princeps

Family: Erethizontidae

• North American porcupine, Erethizon dorsatum

Family: Echimyidae

• Coypu, Myocastor coypus introduced

Family: Sciuridae

• Harris's antelope squirrel, Ammospermophilus harrisii
• Texas antelope squirrel, Ammospermophilus interpres
• White-tailed antelope squirrel, Ammospermophilus leucurus
• Golden-mantled ground squirrel, Callospermophilus lateralis
• Gunnison's prairie dog, Cynomys gunnisoni
• Black-tailed prairie dog, Cynomys ludovicianus
• Mexican ground squirrel, Ictidomys mexicanus
• Thirteen-lined ground squirrel, Ictidomys tridecimlineatus
• Yellow-bellied marmot, Marmota flaviventris
• Gray-footed chipmunk, Neotamias canipes
• Gray-collared chipmunk, Neotamias cinereicollis
• Cliff chipmunk, Neotamias dorsalis
• Least chipmunk, Neotamias minimus
• Colorado chipmunk, Neotamias quadrivittatus
• Rock squirrel, Otospermophilus variegatus
• Abert's squirrel, Sciurus aberti
• Arizona gray squirrel, Sciurus arizonensis
• Fox squirrel, Sciurus niger
• Southwestern red squirrel, Tamiasciurus fremonti
• Spotted ground squirrel, Xerospermophilus spilosoma

Family: Canidae

• Coyote, Canis latrans
• Gray wolf, Canis lupus reintroduced
  • Mexican wolf, C. l. baileyi reintroduced^[3]
  • Mogollon mountain wolf, C. l. mogollonensis EX
  • Texas wolf, C. l. monstrabilis EX
  • Great Plains wolf, C. l. nubilus EX
  • Southern Rocky Mountain wolf, C. l. youngi EX
• Gray fox, Urocyon cinereoargenteus
• Kit fox, Vulpes macrotis
• Swift fox, Vulpes velox
• Red fox, Vulpes vulpes

Family: Ursidae

• American black bear, Ursus americanus
• Brown bear, Ursus arctos extirpated
  • Grizzly bear, U. a. horribilis extirpated
  • Mexican grizzly bear, U. a. horribilis EX

Family: Procyonidae

• Ring-tailed cat, Bassariscus astutus
• White-nosed coati, Nasua narica
• Raccoon, Procyon lotor

Family: Mephitidae

• American hog-nosed skunk, Conepatus leuconotus
• Hooded skunk, Mephitis macroura
• Striped skunk, Mephitis mephitis
• Western spotted skunk, Spilogale gracilis

Family: Felidae

• Canada lynx, Lynx canadensis
• Bobcat, Lynx rufus
• Jaguar, Panthera onca vagrant^[4]
• Cougar, Puma concolor

Family: Mustelidae

• Wolverine, Gulo gulo extirpated
• North American river otter, Lontra canadensis reintroduced
• Pacific marten, Martes caurina
• Black-footed ferret, Mustela nigripes reintroduced
• American ermine, Mustela richardsonii
• Long-tailed weasel, Neogale frenata
• American mink, Neogale vison
• American badger, Taxidea taxus

Family: Antilocapridae

• Pronghorn, Antilocapra americana

Family: Bovidae

• Barbary sheep, Ammotragus lervia introduced
• American bison, Bison bison reintroduced
  • Plains bison, B. b. bison reintroduced
• Wild goat, Capra aegagrus introduced^[5]
• Siberian ibex, Capra sibirica introduced^[6]
• Himalayan tahr, Hemitagus jemlahicus introduced
• Gemsbok, Oryx gazella introduced
• Bighorn sheep, Ovis canadensis
  • Desert bighorn sheep, O. c. nelsoni

Family: Cervidae

• Moose, Alces alces vagrant
• Elk, Cervus canadensis reintroduced
  • Merriam's elk, C. c. merriami EX
  • Rocky Mountain elk, C. c. nelsoni introduced
• Mule deer, Odocoileus hemionus
  • Desert mule deer, O. h. eremicus
  • Rocky Mountain mule deer, O. h. hemionus
• White-tailed deer, Odocoileus virginianius
  • Coues' deer, O. v. couesi

Family: Suidae

• Wild boar, Sus scrofa introduced

Family: Tayassuidae

• Collared peccary, Dicotyles tajacu