Critically Endangered (CR) is a conservation status assigned by the International Union for the Conservation of Nature (IUCN) to species or lower taxa whose numbers have decreased or will decrease by 80% within three generations.

Critically Endangered is the highest risk category for wild species.

Examples of critically endangered species are; Golden Mantella, Iriomote Cat, Island Fox, Black-Footed Ferret, Iberian Lynx, Yangtze River Dolphin, Black Rhinoceros, Bactrian Camel, Western Gorilla, Mediterranean Monk Seal and the Gharial.

Also see:
Data Deficient
Least Concern
Near Threatened
Vulnerable
Endangered
Extinct in the Wild
Extinct