Distinguish between endangered and extinct species.
Endangered Species
(1) These are species which are in danger of extinction.
(2) The survival of such species is difficult if the negative factors that have led to a decline in their population continue to operate
(3) Examples : Blackbuck, wild ass, Indian rhino, crocodile, liontailed macaque etc.
Extinct Species
(1) These are species which are not found after searches of known or likely areas where they may occur.
(2) They are already missing and their survival is suspicious.
(3) Examples : Asiatic cheetah, pink headed duck, Vultures etc