A Red Data Book is a document that is maintained by a state or a nation that is established to record and document the rare and endangered species of plants and animals that exist within a country or a state. The Red Data Book helps in providing complete information for research, studies, and also for monitoring the programs on rare and endangered species and their habitats. The International Union for Conservation of Nature (IUCN) also maintains a Red List of Threatened Species, which is an inventory of the global conservation status and extinction risk of biological species. The IUCN Red List is a critical indicator of the health of the worlds biodiversity and provides information about range, population size, habitat and ecology, use and/or trade, threats, and conservation actions that will help inform necessary conservation decisions. The Red Data Book and the IUCN Red List are both important tools for informing conservation action and policy, and for protecting the natural resources we need to survive.