Threatened Animals
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- A Threatened species is one that is likely to become endangered throughout all or a significant portion of its range within the foreseeable future unless significant changes occur. Animals listed as Threatened may be stressed by over-exploitation or by habitat loss. Some of these species may still appear to be common but generally are experiencing such pressure throughout their range that it is important to offer them the additional protection this status provides. A general term used to cover all taxa whose survival is uncertain.
Index by Species
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- Aburria aburri
- Acalypta cooleyi
- Acanthametropus pecatonica
- Acanthostracion quadricornis
- Accipiter collaris
- Accipiter gentilis laingi
- Accipiter haplochrous
- Accipiter henstii
- Accipiter madagascariensis
- Accipiter nanus
- Accipiter princeps
- Aceros corrugatus
- Aceros leucocephalus
- Acipenser medirostris
- Acipenser oxyrinchus
- Acipenser oxyrinchus oxyrinchus
- Acrocephalus kerearako
- Acrolophitus nevadensis
- Acroneuria ozarkensis
- Acronicta falcula
- Acrotrichis lucidula
- Actaea arizonica
- Actenoides concretus
- Actenoides monachus
- Acupalpus punctulatus
- Adela oplerella
- Adelotus brevis
- Aegithina viridissima
- Aegypius monachus
- Aeoloplides fratercula
- Aeoloplides rotundipennis
- Aethomys stannarius
- Aethopyga boltoni
- Aethopyga linaraborae
- Aethopyga primigenia
- Aetobatus narinari
- Afurcagobius tamarensis
- Agapetus montanus
- Agapornis fischeri
- Agapornis lilianae
- Agathymus stephensi
- Agriades cassiope
- Agrotis buchholzi
- Agrotis carolina
- Aimophila aestivalis
- Aimophila notosticta
- Aimophila sumichrasti
- Alcedo hercules
- Alcippe brunneicauda
- Allenhyphes vescus
- Alligator mississippiensis
- Allocapnia brooksi
- Allocapnia frumi
- Allocapnia fumosa
- Allocapnia jeanae
- Allocapnia ozarkana
- Allocapnia simmonsi
- Alloperla caddo
- Alloperla furcula
- Alloperla lenati
- Alloperla natchez
- Alloperla ouachita
- Allopodops mississippiensis
- Allotexiweckelia hirsuta
- Alophoixus finschii
- Alouatta guariba
- Alouatta guariba clamitans
- Alsodes nodosus
- Amaurospiza moesta
- Amaurospiza relicta
- Amazona dufresniana
- Amazona leucocephala
- Amazona tucumana
- Amazona xanthops
- Amblyscirtes alternata
- Amblyscirtes linda
- Ambystoma jeffersonianum
- Ameletus bellulus
- Ameletus falsus
- Ameletus pritchardi
- Ameletus suffusus
- Ameletus tarteri
- Ameletus vancouverensis
- Ameractis satis
- Ametropus albrighti
- Ammodramus henslowii
- Amolops cremnobatus
- Amphinemura mockfordi
- Amphispiza belli clementeae
- Amytornis dorotheae
- Anabacerthia amaurotis
- Anacamptodes cypressaria
- Anairetes fernandezianus
- Analetris eximia
- Anarhichas denticulatus
- Anas falcata
- Andigena hypoglauca
- Andigena laminirostris
- Andrena balsamorhizae
- Andrias japonicus
- Andropadus montanus
- Aneides aeneus
- Anepeorus simplex
- Anguispira alabama
- Anguispira cumberlandiana
- Anguispira macneilli
- Anguispira rugoderma
- Anhinga melanogaster
- Anisota oslari
- Aniulus orientalis
- Anodonta wahlametensis
- Anomala carlsoni
- Anomala hardyorum
- Anomalurus pelii
- Anorrhinus tickelli
- Anthracoceros coronatus
- Anthracoceros malayanus
- Anthreptes reichenowi
- Anthreptes rhodolaemus
- Anthus antarcticus
- Anthus melindae
- Anthus nilghiriensis
- Antilope cervicapra
- Anurophasis monorthonyx
- Aonyx cinereus
- Apalis lynesi
- Aphaenogaster huachucana
- Aphanotriccus audax
- Aphaostracon hypohyalinum
- Aphaostracon rhadinum
- Aphelocephala pectoralis
- Aphelocoma insularis
- Aplonis crassa
- Aplonis feadensis
- Aplonis mystacea
- Aplonis zelandica
- Aprasia rostrata
- Apristurus albisoma
- Aprosmictus jonquillaceus
- Aquila gurneyi
- Aratinga auricapillus
- Aratinga erythrogenys
- Arborophila atrogularis
- Arborophila charltonii
- Arborophila crudigularis
- Arcanator orostruthus
- Archboldia papuensis
- Ardeotis australis
- Argiacris rehni
- Argillophora furcilla
- Argusianus argus
- Ariolimax californicus
- Ariolimax dolichophallus
- Arius stormii
- Arremon franciscanus
- Arrhopalites altus
- Arrhopalites carolynae
- Arrhopalites commorus
- Arrhopalites dubius
- Arrhopalites jay
- Arrhopalites marshalli
- Arvicanthis blicki
- Ashmunella angulata
- Ashmunella auriculata
- Ashmunella cockerelli
- Ashmunella organensis
- Ashmunella proxima
- Ashmunella thompsoniana
- Ashmunella varicifera
- Asioplax numinuh
- Asioplax texana
- Aspistor luniscutis
- Asthenes berlepschi
- Asthenes heterura
- Asthenes huancavelicae
- Asthenes urubambensis
- Astrapia mayeri
- Atelomycterus marmoratus
- Atelornis crossleyi
- Atheta annexa
- Atlapetes fuscoolivaceus
- Atlapetes rufigenis
- Atlapetes terborghi
- Atrichornis rufescens
- Augastes lumachella
- Augastes scutatus
- Austrotinodes texensis
- Automeris louisiana
- Automeris zephyria
- Aythya nyroca
Last Revised: September 30, 2008