Listed Vertebrate Animals
451 Records
Parameters:
- Group Type: Vertebrates
- Listing Statuses: Endangered, Threatened, Emergency Listing, Endangered, Emergency Listing, Threatened, Similarity of Appearance (Endangered), Similarity of Appearance (Threatened)
- Listed in the US
When searching by State,
please note that a species will show up in the report only if it has a spatial current range.
State associations for a species are based on a spatial current range delineated by
FWS biologists in TESS (and not all species have spatial current range delineated at
the present time).
The current range of species entities consisting of one or more populations does not include states or countries outside those population boundaries, even though the species may occur there in a population not covered by the Endangered Species Act.
The current range of species entities consisting of one or more populations does not include states or countries outside those population boundaries, even though the species may occur there in a population not covered by the Endangered Species Act.
| Scientific Name | Common Name | Lead Region | Federal Listing Status | Where Listed |
|---|---|---|---|---|
| Accipiter striatus venator | Puerto Rican sharp-shinned hawk | 4 | Endangered | Wherever found |
| Acipenser brevirostrum | Shortnose sturgeon | NMFS | Endangered | Wherever found |
| Acipenser medirostris | green sturgeon | NMFS | Threatened | Southern DPS - See 50 CFR 223.102 |
| Acipenser oxyrinchus (=oxyrhynchus) desotoi | Gulf sturgeon | 4 | Threatened | Wherever found |
| Acipenser oxyrinchus oxyrinchus | Atlantic sturgeon | NMFS | Endangered | Carolina DPS - See 50 CFR 224.101 |
| Acipenser oxyrinchus oxyrinchus | Atlantic sturgeon | NMFS | Endangered | Chesapeake Bay DPS - See 50 CFR 224.101 |
| Acipenser oxyrinchus oxyrinchus | Atlantic sturgeon | NMFS | Endangered | New York Bight DPS - See 50 CFR 224.101 |
| Acipenser oxyrinchus oxyrinchus | Atlantic sturgeon | NMFS | Endangered | South Atlantic DPS - See 50 CFR 224.101 |
| Acipenser oxyrinchus oxyrinchus | Atlantic sturgeon | NMFS | Threatened | Gulf of Maine DPS - See 50 CFR 223.102 |
| Acipenser transmontanus | White sturgeon | 1 | Endangered | U.S.A. (ID, MT), Canada (B.C.), (Kootenai R. system) |
| Acrocephalus familiaris kingi | Nihoa millerbird (old world warbler) | 1 | Endangered | Wherever found |
| Acrocephalus luscinia | Nightingale reed warbler (old world warbler) | 1 | Endangered | Wherever found |
| Aerodramus bartschi | Mariana swiftlet | 1 | Endangered | Wherever found |
| Agelaius xanthomus | Yellow-shouldered blackbird | 4 | Endangered | Wherever found |
| Alligator mississippiensis | American alligator | 4 | Similarity of Appearance to a Threatened Taxon | Wherever found |
| Amazona vittata | Puerto Rican parrot | 4 | Endangered | Wherever found |
| Amblyopsis rosae | Ozark cavefish | 4 | Threatened | Wherever found |
| Ambystoma bishopi | Reticulated flatwoods salamander | 4 | Endangered | Wherever found |
| Ambystoma californiense | California tiger Salamander | 8 | Endangered | U.S.A. (CA - Santa Barbara County) |
| Ambystoma californiense | California tiger Salamander | 8 | Endangered | U.S.A. (CA - Sonoma County) |
| Ambystoma californiense | California tiger Salamander | 8 | Threatened | U.S.A. (CA - Central California) |
| Ambystoma cingulatum | Frosted Flatwoods salamander | 4 | Threatened | Wherever found |
| Ambystoma macrodactylum croceum | Santa Cruz long-toed salamander | 8 | Endangered | Wherever found |
| Ambystoma mavortium stebbinsi | Sonoran tiger salamander | 2 | Endangered | Wherever found |
| Ameiva polops | St. Croix ground lizard | 4 | Endangered | Wherever found |
| Ammodramus savannarum floridanus | Florida grasshopper sparrow | 4 | Endangered | Wherever found |
| Ammospiza maritima mirabilis | Cape Sable seaside sparrow | 4 | Endangered | Wherever found |
| Anas laysanensis | Laysan duck | 1 | Endangered | Wherever found |
| Anas wyvilliana | Hawaiian duck | 1 | Endangered | Wherever found |
| Anaxyrus baxteri | Wyoming Toad | 6 | Endangered | Wherever found |
| Anaxyrus californicus | Arroyo (=arroyo southwestern) toad | 8 | Endangered | Wherever found |
| Anaxyrus canorus | Yosemite toad | 8 | Threatened | Wherever found |
| Anaxyrus williamsi | Dixie Valley Toad | 8 | Endangered | Entire |
| Anolis roosevelti | Culebra Island giant anole | 4 | Endangered | Wherever found |
| Anoxypristis cuspidata | Narrow sawfish | NMFS | Endangered | Wherever found |
| Antigone canadensis pulla | Mississippi sandhill crane | 4 | Endangered | Wherever found |
| Antilocapra americana sonoriensis | Sonoran pronghorn | 2 | Endangered | Wherever found, except where listed as an experimental population |
| Antrostomus noctitherus | Puerto Rican nightjar | 4 | Endangered | Wherever found |
| Aphelocoma coerulescens | Florida scrub-jay | 4 | Threatened | Wherever found |
| Aplodontia rufa nigra | Point Arena mountain beaver | 8 | Endangered | Wherever found |
| Arctocephalus townsendi | Guadalupe fur seal | NMFS | Threatened | Wherever found |
| Balaena mysticetus | Bowhead whale | NMFS | Endangered | Wherever found |
| Balaenoptera borealis | Sei whale | NMFS | Endangered | Wherever found |
| Balaenoptera edeni | Gulf of Mexico Bryde's Whale | NMFS | Endangered | Entire |
| Balaenoptera musculus | Blue whale | NMFS | Endangered | Wherever found |
| Balaenoptera physalus | Finback whale | NMFS | Endangered | Wherever found |
| Batrachoseps aridus | Desert slender salamander | 8 | Endangered | Wherever found |
| Bison bison athabascae | Wood Bison | 7 | Threatened | Wherever found |
| Brachylagus idahoensis | Pygmy Rabbit | 1 | Endangered | Columbia Basin DPS (WA-Douglas, Grant, Lincoln, Adams, Benton Counties) |
| Brachyramphus marmoratus | Marbled Murrelet | 1 | Threatened | U.S.A. (CA, OR, WA) |
| Branta (=Nesochen) sandvicensis | Hawaiian goose | 1 | Threatened | Wherever found |
| Bufo houstonensis | Houston toad | 2 | Endangered | Wherever found |
| Buteo platypterus brunnescens | Puerto Rican broad-winged hawk | 4 | Endangered | Wherever found |
| Calidris canutus rufa | rufa red knot | 5 | Threatened | Wherever found |
| Campephilus principalis | Ivory-billed woodpecker | 4 | Endangered | Wherever found |
| Canis lupus | Gray wolf | 3 | Threatened | U.S.A. (MN) |
| Canis lupus | Gray wolf | 6 | Endangered | U.S.A.: All of AL, AR, CA, CO, CT, DE, FL, GA, IA, IN, IL, KS, KY, LA, MA, MD, ME, MI, MO, MS, NC, ND, NE, NH, NJ, NV, NY, OH, OK, PA, RI, SC, SD, TN, TX, VA, VT, WI, and WV; and portions of AZ, NM, OR, UT, and WA as follows: (1) Northern AZ (that portion north of the centerline of Interstate Highway 40); (2) Northern NM (that portion north of the centerline of Interstate Highway 40); (3) Western OR (that portion of OR west of the centerline of Highway 395 and Highway 78 north of Burns Junction and that portion of OR west of the centerline of Highway 95 south of Burns Junction); (4) Most of Utah (that portion of UT south and west of the centerline of Highway 84 and that portion of UT south of Highway 80 from Echo to the UT/WY Stateline); and (5) Western WA (that portion of WA west of the centerline of Highway 97 and Highway 17 north of Mesa and that portion of WA west of the centerline of Highway 395 south of Mesa). Mexico. |
| Canis lupus baileyi | Mexican wolf | 2 | Endangered | Wherever found, except where included in an experimental population as set forth in 17.84(k) |
| Canis rufus | Red wolf | 4 | Endangered | Wherever found, except where listed as an experimental population |
| Caracara plancus audubonii | Crested caracara (Audubon''''s) [FL DPS] | 4 | Threatened | U.S.A. (FL) |
| Carcharhinus longimanus | Oceanic whitetip shark | NMFS | Threatened | Entire |
| Caretta caretta | Loggerhead sea turtle | 1 | Endangered | North Pacific Ocean DPS - Loggerhead sea turtles originating from the North Pacific north of the equator and south of 60 degrees N. Lat |
| Caretta caretta | Loggerhead sea turtle | 4 | Threatened | Northwest Atlantic Ocean DPS - Loggerhead sea turtles originating from the Northwest Atlantic Ocean west of 40 degrees W. Long |
| Catostomus discobolus yarrowi | Zuni bluehead Sucker | 2 | Endangered | Wherever found |
| Catostomus santaanae | Santa Ana sucker | 8 | Threatened | Los Angeles River basin, San Gabriel River basin, Santa Ana River basin |
| Catostomus warnerensis | Warner sucker | 1 | Threatened | Wherever found |
| Centrocercus minimus | Gunnison sage-grouse | 6 | Threatened | Wherever found |
| Charadrius melodus | Piping Plover | 3 | Endangered | [Great Lakes watershed DPS] - Great Lakes, watershed in States of IL, IN, MI, MN, NY, OH, PA, and WI and Canada (Ont.) |
| Charadrius melodus | Piping Plover | 5 | Threatened | [Atlantic Coast and Northern Great Plains populations] - Wherever found, except those areas where listed as endangered. |
| Charadrius nivosus nivosus | Western Snowy Plover | 8 | Threatened | Pacific Coast population DPS-U.S.A. (CA, OR, WA), Mexico (within 50 miles of Pacific coast) |
| Chasiempis ibidis | Oahu elepaio | 1 | Endangered | Wherever found |
| Chasmistes brevirostris | Shortnose Sucker | 8 | Endangered | Wherever found |
| Chasmistes cujus | Cui-ui | 8 | Endangered | Wherever found |
| Chasmistes liorus | June sucker | 6 | Threatened | Wherever found |
| Chelonia mydas | Green sea turtle | 1 | Endangered | Green sea turtles originating from the Central South Pacific Ocean, bounded by the following coordinates: 9 degrees N., 175 degrees W. in the northwest; 9 degrees N., 125 degrees W. in the northeast; 40 degrees S., 96 degrees W. in the southeast; 40 degrees S., 176 degrees E. in the southwest; and 13 degrees S., 171 degrees E. in the west |
| Chelonia mydas | Green sea turtle | 1 | Endangered | Green sea turtles originating from the Central West Pacific Ocean, bounded by the following coordinates: 41 degrees N., 146 degrees E. in the northwest; 41 degrees N., 169 degrees E. in the northeast; 9 degrees N., 175 degrees W. in the east; 13 degrees S., 171 degrees E. in the southeast; along the northern coast of the island of New Guinea; and 4.5 degrees N., 129 degrees E. in the west |
| Chelonia mydas | Green sea turtle | 1 | Threatened | Green sea turtles originating from the Central North Pacific Ocean, bounded by the following coordinates: 41 degrees N., 169 degrees E. in the northwest; 41 degrees N., 143 degrees W. in the northeast; 9 degrees N., 125 degrees W. in the southeast; and 9 degrees N., 175 degrees W. in the southwest Pacific coast of Mexico |
| Chelonia mydas | Green sea turtle | 4 | Threatened | Green sea turtles originating from the North Atlantic Ocean, bounded by the following lines and coordinates: 48 degrees N. Lat. in the north, along the western coasts of Europe and Africa (west of 5.5 degrees W. Long.); north of 19 degrees N. Lat. in the east; bounded by 19 degrees N., 65.1 degrees W. to 14 degrees N., 65.1 degrees W. then 14 degrees N., 77 degrees W. in the south and west; and along the eastern coasts of the Americas (north of 7.5 degrees N., 77 degrees W.) |
| Chelonia mydas | Green sea turtle | 4 | Threatened | Green sea turtles originating from the South Atlantic Ocean, bounded by the following lines and coordinates: along the northern and eastern coasts of South America (east of 7.5 degrees N., 77 degrees W.); 14 degrees N., 77 degrees W. to 14 degrees N., 65.1 degrees W. to 19 degrees N., 65.1 degrees W. in the north and west; 19 degrees N. Lat. in the northeast; 40 degrees S., 19 degrees E. in the southeast; and 40 degrees S. Lat. in the south |
| Chelonia mydas | Green sea turtle | 8 | Threatened | Green sea turtles originating from the East Pacific Ocean, bounded by the following lines and coordinates: 41 degrees N., 143 degrees W. in the northwest; 41 degrees N. Lat. in the north; along the western coasts of the Americas; 40 degrees S. Lat. in the south; and 40 degrees S., 96 degrees W. in the southwest |
| Chilabothrus granti | Virgin Islands tree boa | 4 | Endangered | Wherever found |
| Chilabothrus inornatus | Puerto Rican boa | 4 | Endangered | Wherever found |
| Chrosomus saylori | Laurel dace | 4 | Endangered | Wherever found |
| Coccyzus americanus | Yellow-billed Cuckoo | 2 | Threatened | Western DPS: U.S.A. (AZ, CA, CO (western), ID, MT (western), NM (western), NV, OR, TX (western), UT, WA, WY (western)); Canada (British Columbia (southwestern); Mexico (Baja California, Baja California Sur, Chihuahua, Durango (western), Sinaloa, Sonora) |
| Colinus virginianus ridgwayi | Masked bobwhite (quail) | 2 | Endangered | Wherever found |
| Corvus hawaiiensis | Hawaiian crow | 1 | Endangered | Wherever found |
| Corvus kubaryi | Mariana (=aga) Crow | 1 | Endangered | Wherever found |
| Corvus leucognaphalus | White-necked crow | 4 | Endangered | Wherever found |
| Corynorhinus (=Plecotus) townsendii ingens | Ozark big-eared bat | 2 | Endangered | Wherever found |
| Corynorhinus (=Plecotus) townsendii virginianus | Virginia big-eared bat | 5 | Endangered | Wherever found |
| Cottus paulus (=pygmaeus) | Pygmy Sculpin | 4 | Threatened | Wherever found |
| Cottus specus | Grotto Sculpin | 3 | Endangered | Wherever found |
| Crenichthys baileyi baileyi | White River springfish | 8 | Endangered | Wherever found |
| Crenichthys baileyi grandis | Hiko White River springfish | 8 | Endangered | Wherever found |
| Crenichthys nevadae | Railroad Valley springfish | 8 | Threatened | Wherever found |
| Crocodylus acutus | American crocodile | 4 | Threatened | U.S.A. (FL) |
| Crotalus willardi obscurus | New Mexican ridge-nosed rattlesnake | 2 | Threatened | Wherever found |
| Cryptobranchus alleganiensis | Eastern Hellbender | 3 | Endangered | Missouri DPS |
| Cryptobranchus alleganiensis bishopi | Ozark Hellbender | 3 | Endangered | Wherever found |
| Crystallaria cincotta | diamond Darter | 5 | Endangered | Wherever found |
| Cyclura stejnegeri | Mona ground Iguana | 4 | Threatened | Wherever found |
| Cynomys parvidens | Utah prairie dog | 6 | Threatened | Wherever found |
| Cyprinella caerulea | Blue shiner | 4 | Threatened | Wherever found |
| Cyprinella formosa | Beautiful shiner | 2 | Threatened | Wherever found |
| Cyprinodon bovinus | Leon Springs pupfish | 2 | Endangered | Wherever found |
| Cyprinodon diabolis | Devils Hole pupfish | 8 | Endangered | Wherever found |
| Cyprinodon elegans | Comanche Springs pupfish | 2 | Endangered | Wherever found |
| Cyprinodon macularius | Desert pupfish | 2 | Endangered | Wherever found |
| Cyprinodon nevadensis mionectes | Ash Meadows Amargosa pupfish | 8 | Endangered | Wherever found |
| Cyprinodon nevadensis pectoralis | Warm Springs pupfish | 8 | Endangered | Wherever found |
| Cyprinodon radiosus | Owens pupfish | 8 | Endangered | Wherever found |
| Delphinapterus leucas | beluga whale | NMFS | Endangered | Cook Inlet DPS See 50 CFR 224.101 |
| Deltistes luxatus | Lost River sucker | 8 | Endangered | Wherever found |
| Dermochelys coriacea | Leatherback sea turtle | 4 | Endangered | Wherever found |
| Dionda diaboli | Devils River minnow | 2 | Threatened | Wherever found |
| Dipodomys heermanni morroensis | Morro Bay kangaroo rat | 8 | Endangered | Wherever found |
| Dipodomys ingens | Giant kangaroo rat | 8 | Endangered | Wherever found |
| Dipodomys merriami parvus | San Bernardino Merriam's kangaroo rat | 8 | Endangered | Wherever found |
| Dipodomys nitratoides exilis | Fresno kangaroo rat | 8 | Endangered | Wherever found |
| Dipodomys nitratoides nitratoides | Tipton kangaroo rat | 8 | Endangered | Wherever found |
| Dipodomys stephensi (incl. D. cascus) | Stephens' kangaroo rat | 8 | Threatened | Wherever found |
| Drepanis coccinea | `I`iwi | 1 | Threatened | Wherever found |
| Drymarchon couperi | Eastern indigo snake | 4 | Threatened | Wherever found |
| Elassoma alabamae | Spring pygmy sunfish | 4 | Threatened | Wherever found |
| Eleutherodactylus cooki | Guajon | 4 | Threatened | Wherever found |
| Eleutherodactylus jasperi | Golden coqui | 4 | Threatened | Wherever found |
| Eleutherodactylus juanariveroi | Llanero Coqui | 4 | Endangered | Wherever found |
| Emballonura semicaudata rotensis | Pacific sheath-tailed Bat | 1 | Endangered | Wherever found |
| Emballonura semicaudata semicaudata | Pacific sheath-tailed Bat | 1 | Endangered | American Samoa |
| Emoia slevini | Slevin's skink | 1 | Endangered | Wherever found |
| Empetrichthys latos | Pahrump poolfish | 8 | Endangered | Wherever found |
| Empidonax traillii extimus | Southwestern willow flycatcher | 2 | Endangered | Wherever found |
| Enhydra lutris kenyoni | Northern Sea Otter | 7 | Threatened | Southwest Alaska, from Attu Island to Western Cook Inlet, including Bristol Bay, the Kodiak Archipelago, and the Barren Islands |
| Enhydra lutris nereis | Southern sea otter | 8 | Threatened | Wherever found |
| Epicrates monensis monensis | Mona boa | 4 | Threatened | Wherever found |
| Epinephelus striatus | Nassau grouper | NMFS | Threatened | Entire |
| Eremichthys acros | Desert dace | 8 | Threatened | Wherever found |
| Eremophila alpestris strigata | Streaked Horned lark | 1 | Threatened | Wherever found |
| Eretmochelys imbricata | Hawksbill sea turtle | 4 | Endangered | Wherever found |
| Erignathus barbatus nauticus | bearded Seal | NMFS | Threatened | Beringia DPS - See 50 CFR 223.102 |
| Erignathus barbatus nauticus | bearded Seal | NMFS | Threatened | Okhotsk DPS - See 50 CFR 223.102 |
| Erimonax monachus | Spotfin Chub | 4 | Threatened | Wherever found, except where listed as an experimental population |
| Erimystax cahni | Slender chub | 4 | Threatened | Wherever found |
| Etheostoma akatulo | bluemask darter | 4 | Endangered | Wherever found |
| Etheostoma boschungi | Slackwater darter | 4 | Threatened | Wherever found |
| Etheostoma chermocki | Vermilion darter | 4 | Endangered | Wherever found |
| Etheostoma chienense | Relict darter | 4 | Threatened | Wherever found |
| Etheostoma etowahae | Etowah darter | 4 | Endangered | Wherever found |
| Etheostoma fonticola | Fountain darter | 2 | Endangered | Wherever found |
| Etheostoma moorei | Yellowcheek Darter | 4 | Endangered | Wherever found |
| Etheostoma nianguae | Niangua darter | 3 | Threatened | Wherever found |
| Etheostoma nuchale | Watercress darter | 4 | Endangered | Wherever found |
| Etheostoma osburni | Candy darter | 5 | Endangered | Wherever found |
| Etheostoma percnurum | Duskytail darter | 4 | Endangered | Wherever found |
| Etheostoma phytophilum | Rush Darter | 4 | Endangered | Wherever found |
| Etheostoma rubrum | Bayou darter | 4 | Threatened | Wherever found |
| Etheostoma scotti | Cherokee darter | 4 | Threatened | Wherever found |
| Etheostoma sellare | Maryland darter | 5 | Endangered | Wherever found |
| Etheostoma spilotum | Kentucky arrow darter | 4 | Threatened | Wherever found |
| Etheostoma susanae | Cumberland darter | 4 | Endangered | Wherever found |
| Etheostoma trisella | Trispot darter | 4 | Threatened | Wherever found |
| Etheostoma wapiti | Boulder darter | 4 | Endangered | Wherever found |
| Eubalaena glacialis | North Atlantic Right Whale | NMFS | Endangered | Wherever found |
| Eubalaena japonica | North Pacific Right Whale | NMFS | Endangered | Wherever found |
| Eucyclogobius newberryi | Tidewater goby | 8 | Endangered | Wherever found |
| Eumeces egregius lividus | blue-tailed mole skink | 4 | Threatened | Wherever found |
| Eumetopias jubatus | Steller sea lion | NMFS | Endangered | Western DPS - See 50 CFR 224.101 |
| Eumops floridanus | Florida bonneted bat | 4 | Endangered | Wherever found |
| Eurycea chisholmensis | Salado Salamander | 2 | Threatened | Wherever found |
| Eurycea nana | San Marcos salamander | 2 | Threatened | Wherever found |
| Eurycea naufragia | Georgetown Salamander | 2 | Threatened | Wherever found |
| Eurycea rathbuni | Texas blind salamander | 2 | Endangered | Wherever found |
| Eurycea sosorum | Barton Springs salamander | 2 | Endangered | Wherever found |
| Eurycea tonkawae | Jollyville Plateau Salamander | 2 | Threatened | Wherever found |
| Eurycea waterlooensis | Austin blind Salamander | 2 | Endangered | Wherever found |
| Falco femoralis septentrionalis | Northern Aplomado Falcon | 2 | Endangered | Wherever found, except where listed as an experimental population |
| Fulica alai | Hawaiian coot (alae ke`oke`o) | 1 | Endangered | Wherever found |
| Fundulus julisia | Barrens topminnow | 4 | Endangered | Wherever found |
| Gallicolumba stairi | Friendly Ground-Dove | 1 | Endangered | American Samoa DPS |
| Gallinula chloropus guami | Mariana common moorhen (pulattat) | 1 | Endangered | Wherever found |
| Gallinula galeata sandvicensis | Hawaiian common gallinule | 1 | Endangered | Wherever found |
| Gallirallus owstoni | Guam rail | 1 | Endangered | Wherever found, except where listed as an experimental population |
| Gambelia silus | Blunt-nosed leopard lizard | 8 | Endangered | Wherever found |
| Gambusia gaigei | Big Bend gambusia | 2 | Endangered | Wherever found |
| Gambusia heterochir | Clear Creek gambusia | 2 | Endangered | Wherever found |
| Gambusia nobilis | Pecos gambusia | 2 | Endangered | Wherever found |
| Gasterosteus aculeatus williamsoni | Unarmored threespine stickleback | 8 | Endangered | Wherever found |
| Gila bicolor ssp. | Hutton tui chub | 1 | Threatened | Wherever found |
| Gila bicolor ssp. mohavensis | Mohave tui chub | 8 | Endangered | Wherever found |
| Gila bicolor ssp. snyderi | Owens Tui Chub | 8 | Endangered | Wherever found |
| Gila cypha | Humpback chub | 6 | Threatened | Wherever found |
| Gila ditaenia | Sonora chub | 2 | Threatened | Wherever found |
| Gila elegans | Bonytail | 6 | Endangered | Wherever found |
| Gila intermedia | Gila chub | 2 | Endangered | Wherever found |
| Gila nigrescens | Chihuahua chub | 2 | Threatened | Wherever found |
| Gila purpurea | Yaqui chub | 2 | Endangered | Wherever found |
| Gila robusta jordani | Pahranagat roundtail chub | 8 | Endangered | Wherever found |
| Gila seminuda (=robusta) | Virgin River Chub | 6 | Endangered | Wherever found |
| Glaucidium brasilianum cactorum | Cactus ferruginous pygmy-owl | 2 | Threatened | Wherever found |
| Glaucomys sabrinus coloratus | Carolina northern flying squirrel | 4 | Endangered | Wherever found |
| Glyptemys muhlenbergii | bog turtle | 4 | Similarity of Appearance to a Threatened Taxon | U.S.A. (GA, NC, SC, TN, VA) |
| Glyptemys muhlenbergii | bog turtle | 5 | Threatened | Wherever found, except GA, NC, SC, TN, VA |
| Gopherus agassizii | Desert tortoise | 8 | Similarity of Appearance to a Threatened Taxon | AZ south and east of Colorado R., and Mexico, when found outside of Mexico or said range in AZ |
| Gopherus agassizii | Desert tortoise | 8 | Threatened | Wherever found, except AZ south and east of Colorado R., and Mexico |
| Gopherus flavomarginatus | Bolson tortoise | 2 | Endangered | Wherever found |
| Gopherus polyphemus | Gopher tortoise | 4 | Threatened | Western DPS |
| Graptemys flavimaculata | Yellow-blotched map turtle | 4 | Threatened | Wherever found |
| Graptemys oculifera | Ringed map turtle | 4 | Threatened | Wherever found |
| Grus americana | Whooping crane | 2 | Endangered | Wherever found, except where listed as an experimental population |
| Gulo gulo luscus | North American wolverine | 6 | Threatened | Wherever found |
| Gymnogyps californianus | California condor | 8 | Endangered | U.S.A. only, except where listed as an experimental population |
| Gymnomyza samoensis | Mao (= maomao) (honeyeater) | 1 | Endangered | Wherever found |
| Hemignathus wilsoni | akiapolaau | 1 | Endangered | Wherever found |
| Himantopus mexicanus knudseni | Hawaiian stilt | 1 | Endangered | Wherever found |
| Hybognathus amarus | Rio Grande Silvery Minnow | 2 | Endangered | Wherever found, except where listed as an experimental population |
| Hydrobates castro | Band-rumped Storm-petrel | 1 | Endangered | USA (HI) |
| Hypomesus transpacificus | Delta smelt | 8 | Threatened | Wherever found |
| Ictalurus pricei | Yaqui catfish | 2 | Threatened | Wherever found |
| Kinosternon sonoriense longifemorale | Sonoyta mud turtle | 2 | Endangered | Wherever found |
| Lanius ludovicianus mearnsi | San Clemente loggerhead shrike | 8 | Endangered | Wherever found |
| Lasiurus cinereus semotus | Hawaiian hoary bat | 1 | Endangered | Wherever found |
| Laterallus jamaicensis ssp. jamaicensis | Eastern Black rail | 4 | Threatened | Wherever found |
| Leopardus (=Felis) pardalis | Ocelot | 2 | Endangered | wherever found |
| Lepidochelys kempii | Kemp's ridley sea turtle | 2 | Endangered | Wherever found |
| Lepidochelys olivacea | Olive ridley sea turtle | 1 | Threatened | Wherever found, except when listed as endangered under 50 CFR 224.101 |
| Lepidomeda albivallis | White River spinedace | 8 | Endangered | Wherever found |
| Lepidomeda mollispinis pratensis | Big Spring spinedace | 8 | Threatened | Wherever found |
| Lepidomeda vittata | Little Colorado spinedace | 2 | Threatened | Wherever found |
| Leptonycteris nivalis | Mexican long-nosed bat | 2 | Endangered | Wherever found |
| Loxioides bailleui | Palila (honeycreeper) | 1 | Endangered | Wherever found |
| Loxops caeruleirostris | Akekee | 1 | Endangered | Wherever found |
| Loxops coccineus | Hawaii akepa | 1 | Endangered | Wherever found |
| Loxops mana | Hawaii creeper | 1 | Endangered | Wherever found |
| Lynx canadensis | Canada Lynx | 6 | Threatened | Wherever Found in Contiguous U.S. |
| Macrhybopsis tetranema | Peppered chub | 2 | Endangered | Wherever found |
| Manta birostris | Giant Manta Ray | NMFS | Threatened | Entire |
| Martes caurina | Pacific Marten, Coastal Distinct Population Segment | 8 | Threatened | Wherever found |
| Masticophis lateralis euryxanthus | Alameda whipsnake (=striped racer) | 8 | Threatened | Wherever found |
| Meda fulgida | Spikedace | 2 | Endangered | Wherever found |
| Megapodius laperouse | Micronesian megapode | 1 | Endangered | Wherever found |
| Megaptera novaeangliae | Humpback whale | NMFS | Threatened | Mexico DPS |
| Melozone crissalis eremophilus | Inyo California towhee | 8 | Threatened | Wherever found |
| Menidia extensa | Waccamaw silverside | 4 | Threatened | Wherever found |
| Microtus californicus scirpensis | Amargosa vole | 8 | Endangered | Wherever found |
| Microtus pennsylvanicus dukecampbelli | Florida salt marsh vole | 4 | Endangered | Wherever found |
| Moapa coriacea | Moapa dace | 8 | Endangered | Wherever found |
| Monachus schauinslandi | Hawaiian monk seal | NMFS | Endangered | Wherever found |
| Mustela nigripes | Black-footed ferret | 6 | Endangered | Wherever found, except where listed as an experimental population |
| Myadestes lanaiensis rutha | Molokai `oloma`o | 1 | Endangered | Wherever found |
| Myadestes palmeri | Puaiohi | 1 | Endangered | Wherever found |
| Mycteria americana | Wood stork | 4 | Threatened | U.S.A. (AL, FL, GA, MS, NC, SC) |
| Mycteroperca jordani | Gulf Grouper | NMFS | Endangered | Entire |
| Myotis grisescens | Gray bat | 3 | Endangered | Wherever found |
| Myotis septentrionalis | Northern Long-Eared Bat | 3 | Endangered | Wherever found |
| Myotis sodalis | Indiana bat | 3 | Endangered | Wherever found |
| Necturus alabamensis | Black warrior (=Sipsey Fork) Waterdog | 4 | Endangered | Wherever found |
| Necturus lewisi | Neuse River waterdog | 4 | Threatened | Wherever found |
| Neoseps reynoldsi | Sand skink | 4 | Threatened | Wherever found |
| Neotoma floridana smalli | Key Largo woodrat | 4 | Endangered | Wherever found |
| Neotoma fuscipes riparia | Riparian woodrat (=San Joaquin Valley) | 8 | Endangered | Wherever found |
| Nerodia clarkii taeniata | Atlantic salt marsh snake | 4 | Threatened | Wherever found |
| Nerodia erythrogaster neglecta | Copperbelly water snake | 3 | Threatened | Indiana north of 40 degrees north latitude, Michigan, Ohio |
| Notropis albizonatus | Palezone shiner | 4 | Endangered | Wherever found |
| Notropis buccula | Smalleye Shiner | 2 | Endangered | Wherever found |
| Notropis cahabae | Cahaba shiner | 4 | Endangered | Wherever found |
| Notropis girardi | Arkansas River shiner | 2 | Threatened | Arkansas River Basin (AR, KS, NM, OK, TX) |
| Notropis mekistocholas | Cape Fear shiner | 4 | Endangered | Wherever found |
| Notropis oxyrhynchus | Sharpnose Shiner | 2 | Endangered | Wherever found |
| Notropis simus pecosensis | Pecos bluntnose shiner | 2 | Threatened | Wherever found |
| Notropis topeka (=tristis) | Topeka shiner | 6 | Endangered | Wherever found, except where listed as an experimental population |
| Noturus baileyi | Smoky madtom | 4 | Endangered | Wherever found |
| Noturus crypticus | Chucky Madtom | 4 | Endangered | Wherever found |
| Noturus flavipinnis | Yellowfin madtom | 4 | Threatened | Wherever found, except where listed as an experimental population |
| Noturus furiosus | Carolina madtom | 4 | Endangered | Wherever found |
| Noturus munitus | Frecklebelly madtom | 4 | Threatened | Upper Coosa River Distinct Population Segment |
| Noturus placidus | Neosho madtom | 6 | Threatened | Wherever found |
| Noturus stanauli | Pygmy madtom | 4 | Endangered | Wherever found |
| Numenius borealis | Eskimo curlew | 7 | Endangered | Wherever found |
| Odocoileus virginianus clavium | Key deer | 4 | Endangered | Wherever found |
| Odocoileus virginianus leucurus | Columbian white-tailed deer | 1 | Threatened | Columbia River (Clark, Cowliz, Pacific, Skamania, and Wahkiakum Counties, WA., and Clatsop, Columbia, and Multnomah Counties, OR.) |
| Oncorhynchus aguabonita whitei | Little Kern golden trout | 8 | Threatened | Wherever found |
| Oncorhynchus apache | Apache trout | 2 | Threatened | Wherever found |
| Oncorhynchus clarkii henshawi | Lahontan cutthroat trout | 8 | Threatened | Wherever found |
| Oncorhynchus clarkii seleniris | Paiute cutthroat trout | 8 | Threatened | Wherever found |
| Oncorhynchus clarkii stomias | Greenback Cutthroat trout | 6 | Threatened | Wherever found |
| Oncorhynchus gilae | Gila trout | 2 | Threatened | Wherever found |
| Oncorhynchus keta | Chum salmon | NMFS | Threatened | Columbia River ESU See 50 CFR 223.102 |
| Oncorhynchus keta | Chum salmon | NMFS | Threatened | Hood Canal summer-run ESU - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) kisutch | Coho salmon | NMFS | Endangered | Central California Coast ESU - See 50 CFR 224.101 |
| Oncorhynchus (=Salmo) kisutch | Coho salmon | NMFS | Threatened | Lower Columbia River ESU - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) kisutch | Coho salmon | NMFS | Threatened | Oregon Coast ESU - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) kisutch | Coho salmon | NMFS | Threatened | Southern Oregon - Northern California Coast ESU - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) mykiss | Steelhead (Rainbow Trout) | NMFS | Endangered | Southern California DPS - See 50 CFR 224.101 |
| Oncorhynchus (=Salmo) mykiss | Steelhead (Rainbow Trout) | NMFS | Threatened | California Central Valley DPS - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) mykiss | Steelhead (Rainbow Trout) | NMFS | Threatened | Central California Coast DPS - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) mykiss | Steelhead (Rainbow Trout) | NMFS | Threatened | Lower Columbia River DPS - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) mykiss | Steelhead (Rainbow Trout) | NMFS | Threatened | Middle Columbia River DPS - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) mykiss | Steelhead (Rainbow Trout) | NMFS | Threatened | Northern California DPS - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) mykiss | Steelhead (Rainbow Trout) | NMFS | Threatened | Puget Sound DPS - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) mykiss | Steelhead (Rainbow Trout) | NMFS | Threatened | Snake River Basin DPS - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) mykiss | Steelhead (Rainbow Trout) | NMFS | Threatened | South-Central California Coast DPS - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) mykiss | Steelhead (Rainbow Trout) | NMFS | Threatened | Upper Columbia River DPS - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) mykiss | Steelhead (Rainbow Trout) | NMFS | Threatened | Upper Willamette River DPS - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) nerka | Sockeye salmon | NMFS | Endangered | Snake River ESU - See 50 CFR 224.101 |
| Oncorhynchus (=Salmo) nerka | Sockeye salmon | NMFS | Threatened | Ozette Lake ESU - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) tshawytscha | Chinook salmon | NMFS | Endangered | Sacramento River winter-run ESU - See 50 CFR 224.101 |
| Oncorhynchus (=Salmo) tshawytscha | Chinook salmon | NMFS | Endangered | Upper Columbia River spring-run ESU See 50 CFR 224.101 |
| Oncorhynchus (=Salmo) tshawytscha | Chinook salmon | NMFS | Threatened | California Coastal ESU - See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) tshawytscha | Chinook salmon | NMFS | Threatened | Central Valley spring-run ESU See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) tshawytscha | Chinook salmon | NMFS | Threatened | Lower Columbia River ESU See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) tshawytscha | Chinook salmon | NMFS | Threatened | Puget Sound ESU See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) tshawytscha | Chinook salmon | NMFS | Threatened | Snake River fall-run ESU See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) tshawytscha | Chinook salmon | NMFS | Threatened | Snake River spring/summer-run ESU See 50 CFR 223.102 |
| Oncorhynchus (=Salmo) tshawytscha | Chinook salmon | NMFS | Threatened | Upper Willamette River ESU See 50 CFR 223.102 |
| Orcinus orca | Killer whale | NMFS | Endangered | Southern Resident DPS See 50 CFR 224.101 |
| Oreomystis bairdi | Akikiki | 1 | Endangered | Wherever found |
| Oryzomys palustris natator | Silver rice rat | 4 | Endangered | Lower FL Keys (west of Seven Mile Bridge) |
| Ovis canadensis nelsoni | Peninsular bighorn sheep | 8 | Endangered | U.S.A. (CA) Peninsular Ranges |
| Ovis canadensis sierrae | Sierra Nevada bighorn sheep | 8 | Endangered | U.S.A. (CA) Sierra Nevada |
| Palmeria dolei | `Akohekohe (crested honeycreeper) | 1 | Endangered | Wherever found |
| Panthera onca | Jaguar | 2 | Endangered | Wherever found |
| Paroreomyza maculata | O`ahu `alauahio | 1 | Endangered | Wherever found |
| Patagioenas inornata wetmorei | Puerto Rican plain Pigeon | 4 | Endangered | Wherever found |
| Pekania pennanti | Fisher | 8 | Endangered | Southern Sierra Nevada Distinct Population Segment |
| Peltophryne lemur | Puerto Rican crested toad | 4 | Threatened | Wherever found |
| Percina antesella | Amber darter | 4 | Endangered | Wherever found |
| Percina aurolineata | Goldline darter | 4 | Threatened | Wherever found |
| Percina aurora | Pearl darter | 4 | Threatened | Wherever found |
| Percina jenkinsi | Conasauga logperch | 4 | Endangered | Wherever found |
| Percina pantherina | Leopard darter | 2 | Threatened | Wherever found |
| Percina rex | Roanoke logperch | 5 | Endangered | Wherever found |
| Percina williamsi | Sickle darter | 4 | Threatened | Wherever found |
| Perognathus longimembris pacificus | Pacific pocket mouse | 8 | Endangered | Wherever found |
| Peromyscus gossypinus allapaticola | Key Largo cotton mouse | 4 | Endangered | Wherever found |
| Peromyscus polionotus allophrys | Choctawhatchee beach mouse | 4 | Endangered | Wherever found |
| Peromyscus polionotus ammobates | Alabama beach mouse | 4 | Endangered | Wherever found |
| Peromyscus polionotus niveiventris | Southeastern beach mouse | 4 | Threatened | wherever found |
| Peromyscus polionotus peninsularis | St. Andrew beach mouse | 4 | Endangered | Wherever found |
| Peromyscus polionotus phasma | Anastasia Island beach mouse | 4 | Endangered | Wherever found |
| Peromyscus polionotus trissyllepsis | Perdido Key beach mouse | 4 | Endangered | Wherever found |
| Phaeognathus hubrichti | Red Hills salamander | 4 | Threatened | Wherever found |
| Phoca largha | Spotted Seal | NMFS | Threatened | Southern DPS - See 50 CFR 223.102 |
| Phoca (=Pusa) hispida botnica | Ringed Seal | NMFS | Threatened | Wherever found |
| Phoca (=Pusa) hispida hispida | Ringed Seal | NMFS | Threatened | Wherever found |
| Phoca (=Pusa) hispida ladogensis | Ringed seal | NMFS | Endangered | Ladoga subspecies |
| Phoca (=Pusa) hispida ochotensis | Ringed Seal | NMFS | Threatened | Okhotsk subspecies |
| Phoebastria (=Diomedea) albatrus | Short-tailed albatross | 7 | Endangered | Wherever found |
| Phoxinus cumberlandensis | Blackside dace | 4 | Threatened | Wherever found |
| Physeter catodon (=macrocephalus) | Sperm whale | NMFS | Endangered | Wherever found |
| Picoides borealis | Red-cockaded woodpecker | 4 | Endangered | Wherever found |
| Pituophis melanoleucus lodingi | Black pinesnake | 4 | Threatened | Wherever found |
| Pituophis ruthveni | Louisiana pinesnake | 4 | Threatened | Wherever found |
| Plagopterus argentissimus | Woundfin | 6 | Endangered | Wherever found, except where listed as an experimental population |
| Plethodon neomexicanus | Jemez Mountains salamander | 2 | Endangered | Wherever found |
| Plethodon nettingi | Cheat Mountain salamander | 5 | Threatened | Wherever found |
| Plethodon shenandoah | Shenandoah salamander | 5 | Endangered | Wherever found |
| Poeciliopsis occidentalis | Gila topminnow (incl. Yaqui) | 2 | Endangered | U.S. Only |
| Polioptila californica californica | Coastal California gnatcatcher | 8 | Threatened | Wherever found |
| Polysticta stelleri | Steller's Eider | 7 | Threatened | U.S. Alaska breeding population only |
| Pristis clavata | Dwarf sawfish | NMFS | Endangered | Wherever found |
| Pristis pectinata | Smalltooth sawfish | NMFS | Endangered | US DPS - Smalltooth sawfish originating from U.S. waters. |
| Pristis pristis | Largetooth Sawfish | NMFS | Endangered | Wherever found |
| Pseudemys alabamensis | Alabama red-bellied turtle | 4 | Endangered | Wherever found |
| Pseudemys rubriventris bangsi | Plymouth Redbelly Turtle = Plymouth Redbelly Cooter | 5 | Endangered | Wherever found |
| Pseudonestor xanthophrys | Maui parrotbill (Kiwikiu) | 1 | Endangered | Wherever found |
| Pseudorca crassidens | false killer whale | NMFS | Endangered | Main Hawaiian Islands Insular DPS See 50 CFR 224.101 |
| Psittirostra psittacea | `O`u (honeycreeper) | 1 | Endangered | Wherever found |
| Pterodroma cahow | Bermuda petrel | 4 | Endangered | Wherever found |
| Pterodroma hasitata | Black-capped Petrel | 4 | Endangered | Wherever found |
| Pterodroma sandwichensis | Hawaiian petrel | 1 | Endangered | Wherever found |
| Pteropus mariannus mariannus | Mariana fruit Bat (=Mariana flying fox) | 1 | Threatened | Wherever found |
| Ptychocheilus lucius | Colorado pikeminnow | 6 | Endangered | Wherever found, except where listed as an experimental population |
| Puffinus newelli | Newell''s shearwater | 1 | Threatened | Wherever found |
| Puma (=Felis) concolor (all subsp. except coryi) | Puma (=mountain lion) | 4 | Similarity of Appearance to a Threatened Taxon | U.S.A. (FL) |
| Puma (=Felis) concolor coryi | Florida panther | 4 | Endangered | Wherever found |
| Puma yagouaroundi cacomitli | Gulf Coast jaguarundi | 2 | Endangered | Wherever found |
| Rallus obsoletus levipes | Light-footed Ridgway''s rail | 8 | Endangered | Wherever found |
| Rallus obsoletus obsoletus | California Ridgway''s rail | 8 | Endangered | Wherever found |
| Rallus obsoletus yumanensis | Yuma Ridgway's rail | 2 | Endangered | Wherever found |
| Rana boylii | Foothill yellow-legged frog | 8 | Endangered | California, Coast Range from Monterey County south to Los Angeles County |
| Rana boylii | Foothill yellow-legged frog | 8 | Endangered | California, Sierra Nevada Mountains south of American River sub-basin south to Transverse Range, Kern County |
| Rana boylii | Foothill yellow-legged frog | 8 | Threatened | California, Central Coast Range south of San Francisco Bay to San Benito and Fresno Counties |
| Rana boylii | Foothill yellow-legged frog | 8 | Threatened | California, North Feather River watershed largely in Plumas and Butte Counties |
| Rana chiricahuensis | Chiricahua leopard frog | 2 | Threatened | Wherever found |
| Rana draytonii | California red-legged frog | 8 | Threatened | Wherever found |
| Rana muscosa | Mountain yellow-legged frog | 8 | Endangered | U.S.A., northern California |
| Rana muscosa | Mountain yellow-legged frog | 8 | Endangered | U.S.A., southern California |
| Rana pretiosa | Oregon spotted frog | 1 | Threatened | Wherever found |
| Rana sevosa | dusky gopher frog | 4 | Endangered | Wherever found |
| Rana sierrae | Sierra Nevada Yellow-legged Frog | 8 | Endangered | Wherever found |
| Rangifer tarandus ssp. caribou | Southern Mountain Caribou DPS | 1 | Endangered | U.S.A. (wherever found), Canada (southeastern British Columbia) |
| Reithrodontomys raviventris | Salt marsh harvest mouse | 8 | Endangered | wherever found |
| Rhinichthys osculus lethoporus | Independence Valley speckled dace | 8 | Endangered | Wherever found |
| Rhinichthys osculus nevadensis | Ash Meadows speckled dace | 8 | Endangered | Wherever found |
| Rhinichthys osculus oligoporus | Clover Valley speckled dace | 8 | Endangered | Wherever found |
| Rhinichthys osculus thermalis | Kendall Warm Springs dace | 6 | Endangered | Wherever found |
| Rhynchopsitta pachyrhyncha | Thick-billed parrot | 2 | Endangered | Wherever found |
| Rostrhamus sociabilis plumbeus | Everglade snail kite | 4 | Endangered | Wherever found |
| Salmo salar | Atlantic salmon | 5 | Endangered | Gulf of Maine DPS - See 50 CFR 224.101 |
| Salvelinus confluentus | Bull Trout | 1 | Threatened | U.S.A., coterminous, (lower 48 states) |
| Scaphirhynchus albus | Pallid sturgeon | 6 | Endangered | Wherever found |
| Scaphirhynchus platorynchus | Shovelnose Sturgeon | 6 | Similarity of Appearance to a Threatened Taxon | Wherever found |
| Scaphirhynchus suttkusi | Alabama sturgeon | 4 | Endangered | Wherever found |
| Sebastes paucispinis | Bocaccio | NMFS | Endangered | Puget Sound-Georgia Basin DPS See 50 CFR 224.101 |
| Sebastes pinniger | canary rockfish | NMFS | Threatened | Puget Sound - Georgia Basin DPS See 50 CFR 223.102 |
| Sebastes ruberrimus | yelloweye rockfish | NMFS | Threatened | Puget Sound - Georgia Basin DPS See 50 CFR 223.102 |
| Setophaga angelae | Elfin-woods warbler | 4 | Threatened | Wherever found |
| Setophaga chrysoparia | golden-cheeked warbler | 2 | Endangered | Wherever found |
| Sistrurus catenatus | Eastern Massasauga (=rattlesnake) | 3 | Threatened | Wherever found |
| Somateria fischeri | Spectacled eider | 7 | Threatened | Wherever found |
| Sorex ornatus relictus | Buena Vista Lake ornate Shrew | 8 | Endangered | Wherever found |
| Speoplatyrhinus poulsoni | Alabama cavefish | 4 | Endangered | Wherever found |
| Sphyrna lewini | Scalloped Hammerhead Shark | NMFS | Endangered | Eastern Pacific DPS |
| Sterna dougallii dougallii | Roseate tern | 4 | Threatened | Western Hemisphere and adjacent oceans, incl. U.S.A. (FL, PR, VI), where not listed as endangered |
| Sterna dougallii dougallii | Roseate tern | 5 | Endangered | U.S.A. (Atlantic Coast south to NC), Canada (Newf., N.S, Que.), Bermuda |
| Sternotherus depressus | Flattened musk turtle | 4 | Threatened | Black Warrior R. system upstream from Bankhead Dam |
| Sternula antillarum browni | California least tern | 8 | Endangered | Wherever found |
| Strix occidentalis caurina | Northern spotted owl | 1 | Threatened | Wherever found |
| Strix occidentalis lucida | Mexican spotted owl | 2 | Threatened | Wherever found |
| Sylvilagus bachmani riparius | Riparian brush rabbit | 8 | Endangered | Wherever found |
| Sylvilagus palustris hefneri | Lower Keys marsh rabbit | 4 | Endangered | Wherever found |
| Tamiasciurus fremonti grahamensis | Mount Graham red squirrel | 2 | Endangered | Wherever found |
| Telespiza cantans | Laysan finch | 1 | Endangered | Wherever found |
| Telespiza ultima | Nihoa finch | 1 | Endangered | Wherever found |
| Thaleichthys pacificus | Eulachon | NMFS | Threatened | Southern DPS - See 50 CFR 223.102 |
| Thamnophis eques megalops | Northern Mexican gartersnake | 2 | Threatened | Wherever found |
| Thamnophis gigas | Giant garter snake | 8 | Threatened | Wherever found |
| Thamnophis rufipunctatus | Narrow-headed gartersnake | 2 | Threatened | Wherever found |
| Thamnophis sirtalis tetrataenia | San Francisco garter snake | 8 | Endangered | Wherever found |
| Thomomys mazama glacialis | Roy Prairie pocket gopher | 1 | Threatened | Wherever found |
| Thomomys mazama pugetensis | Olympia pocket gopher | 1 | Threatened | Wherever found |
| Thomomys mazama tumuli | Tenino pocket gopher | 1 | Threatened | Wherever found |
| Thomomys mazama yelmensis | Yelm pocket gopher | 1 | Threatened | Wherever found |
| Tiaroga cobitis | Loach minnow | 2 | Endangered | Wherever found |
| Todiramphus cinnamominus | Guam kingfisher | 1 | Endangered | Wherever found |
| Trichechus manatus | West Indian Manatee | 4 | Threatened | Wherever found |
| Tympanuchus cupido attwateri | Attwater's greater prairie-chicken | 2 | Endangered | Wherever found |
| Tympanuchus pallidicinctus | Lesser prairie-chicken | 2 | Endangered | Southern DPS: All lesser prairie-chickens south of a line starting at 37.9868 N, 105.0133 W, and ending at 31.7351 N, 98.3773 W, NAD83 |
| Tympanuchus pallidicinctus | Lesser prairie-chicken | 2 | Threatened | Northern DPS: All lesser prairie-chickens north of a line starting at 37.9868 N, 105.0133 W, and ending at 31.7351 N, 98.3773 W, NAD83 |
| Uma inornata | Coachella Valley fringe-toed lizard | 8 | Threatened | Wherever found |
| Urocitellus brunneus | Northern Idaho Ground Squirrel | 1 | Threatened | Wherever found |
| Urocyon littoralis catalinae | Santa Catalina Island Fox | 8 | Threatened | Wherever found |
| Ursus arctos horribilis | Grizzly bear | 6 | Threatened | U.S.A., conterminous (lower 48) States, except where listed as an experimental population |
| Ursus maritimus | Polar bear | 7 | Threatened | Wherever found |
| Vireo bellii pusillus | Least Bell's vireo | 8 | Endangered | Wherever found |
| Vulpes macrotis mutica | San Joaquin kit fox | 8 | Endangered | wherever found |
| Vulpes vulpes necator | Sierra Nevada red fox | 8 | Endangered | Sierra Nevada DPS |
| Xyrauchen texanus | Razorback sucker | 6 | Endangered | Wherever found |
| Zapus hudsonius luteus | New Mexico meadow jumping mouse | 2 | Endangered | Wherever found |
| Zapus hudsonius preblei | Preble's meadow jumping mouse | 6 | Threatened | wherever found |
| Zosterops rotensis | Rota bridled white-eye | 1 | Endangered | Wherever found |