The Red Data Book is a publication by the International Union for Conservation of Nature (IUCN) that lists threatened species of plants and animals. It was first published in 1966 and is continually updated. The Red Data Book provides information on endangered species status and aims to help with conservation efforts. Species listed receive more extensive coverage, though coverage of less prominent organisms is also included. Deforestation, hunting, and habitat loss are threats to many species listed in the Red Data Book from India and surrounding regions, such as the clouded leopard, Nilgiri tahr, golden lion tamarin, and red panda.