Endangered species

Endangered species is a population of organisms which are at the risk of becoming extinct because these are either very few in number or threatened by changing environment, predation parameters and human intervention. The International Union for Conservation of Nature(IUCN) has calculated the percentage of endangered species as 40 percent of all organisms based on the sample of species that have been evaluated through 2006. Many nations have laws offering protection to the threatened species. But not all the species could make it to the list of threatened species as these are not noticed. Many more species become extinct without gaining public notice.
There are now 41,415 species on the IUCN Red List and 16,306 of them are threatened with extinction, up from 16,118 last year. This includes both endangered animals and endangered plants.

In the last 500 years, human activity is known to have
forced 820 species to extinction (or extinction in the wild).