- Extinct in the wild (EW): 2 species
- Critically endangered (CR): 203 species
- Endangered (EN): 505 species
- Vulnerable (VU): 536 species
- Near threatened (NT): 345 species
- Least concern (LC): 3,306 species
- Data deficient (DD): 872 species
Mammalian species (IUCN, 2020-1)
- 5850 extant species have been evaluated
- 4978 of those are fully assessed[a]
- 3651 are not threatened at present[b]
- 1244 to 2116 are threatened[c]
- 81 to 83 are extinct or extinct in the wild:
- 81 extinct (EX) species[d]
- 2 extinct in the wild (EW)
- 0 possibly extinct [CR(PE)]
- 0 possibly extinct in the wild [CR(PEW)]
- ^ excludes data deficient evaluations.
- ^ NT and LC.
- ^ Threatened comprises CR, EN and VU. Upper estimate additionally includes DD.
- ^ Chart omits extinct (EX) species
