Search Threatened Species
Explore the IUCN Red List by name, group, country, status, and population trend.
55,200 species
CRBidoup Litter Toad
Leptobrachella bidoupensis
Declining1country
VU
Biel Whitefish
Coregonus confusus
Unknown1country
CRBig Astragalus
Astragalus magnificus
Unknown
VU
Big Bend Slider
Trachemys gaigeae
Unknown2countries
VUBig Black-head
Aythya marila
Unknown
VUBig Blue Pinkgill
Entoloma bloxamii
Declining3countries
EN
Big Headed Horned Frog
Megophrys megacephala
Declining1country
EN
Big Leaf Mahogany
Swietenia macrophylla
Declining9countries
VUBig Levels Salamander
Plethodon sherando
Stable1country
VU
Big Mexican Small-eared Shrew
Cryptotis magna
Declining1country
VU
Big Nellie Hakea
Hakea archaeoides
Unknown1country
CR
Big Pocket Gopher
Heterogeomys lanius
Declining1country
VUBig Quaking Grass
Briza media
Unknown
CR
Big Royal Pygmy Grasshopper
Andriana hancocki
Declining1country
EN
Big Royal Pygmy Grasshopper
Hybotettix humeralis
Declining1country
VUBig white-egret flower
Habenaria dentata
Unknown
EN
Big-Bellied Glandular Bush-Cricket
Bradyporus macrogaster
Declining7countries
EN
Big-eyed Litter Frog
Leptobrachella macrops
Declining1country
CRBig-flowered Fritillary
Fritillaria grandiflora
Declining1country
CR
Big-footed Thorius
Thorius magnipes
Declining1country
CRBig-headed Turtle
Platysternon megacephalum
Declining7countries
ENBig-spotted Cleg
Haematopota bigoti
Unknown10countries
VU
Bigeye Skate
Okamejei meerdervoortii
Declining4countries
VUBigeye Thresher
Alopias superciliosus
Declining64countries
VUBigeye Tuna
Thunnus obesus
Declining107countries