Threatened Species: The following list includes all mammals which occur in Argentina and are rated as Critically Endangered (CR), Endangered (EN) or Vulnerable (VU) in the 2004 IUCN Red List of Threatened Animals.
Critically Endangered:
Short-tailed Chinchilla (Chinchilla brevicaudata).
Endangered:
Andean Cat (Oreailurus jacobita).
Blue Whale (Balaenoptera musculus).
Chacoan Peccary (Catagonus wagneri).
Fin Whale (Balaenoptera physalus).
Giant Armadillo (Priodontes maximus).
Giant Otter (Pteronura brasiliensis).
Lesser Pichi Ciego (Pink Fairy Armadillo) (Chlamyphorus truncatus). (Endemic to Argentina.)
Marine Otter (Lontra felina).
Sei Whale (Balaenoptera borealis).
South Andean Deer (or Chilean Huemul) (Hippocamelus bisulcus).
Southern River Otter (Lontra provocax).
Vulnerable:
Andean Hairy Armadillo (Chaetophractus nationi).
Azara's Agouti (Dasyprocta azarae).
Blackbuck (Antilope cervicapra). (Occurs here in introduced populations.)
Brown Howler (Alouatta guariba (=fusca)).
Bush Dog (Speothos venaticus).
Fossorial Giant Rat (Kunsia fronto).
Giant Anteater (Myrmecophaga tridactyla).
Greater Pichi Ciego (Burmeister's Fairy Armadillo) (Chlamyphorus retusus).
Humpback Whale (Megaptera novaeangliae).
Kodkod (Chilean Cat) (Oncifelis guigna).
Long-tailed Chinchilla (Chinchilla lanigera).
Magellanic Tuco-tuco (Ctenomys magellanicus).
Marsh Deer (Blastocerus dichotomus).
Monito del Monte (Marsupial) (Dromiciops gliroides).
Olrog's Chaco Mouse (Andagalomys olrogi). (Endemic to Argentina.)
Patagonian Opossum (Lestodelphys halli). (Endemic to Argentina.)
Red Myotis (Bat) (Myotis ruber).
Red Vizcacha Rat (Tympanoctomys barrerai).(Endemic to Argentina.)
Shrewish Short-tailed Opossum (Monodelphis sorex).
Southern Myotis (Bat) (Myotis aelleni). (Endemic to Argentina.)
Southern Pudu (Pudu pudu).
Spectacled Bear (Tremarctos ornatus).
Sperm Whale (Physeter catodon).
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