|Risk of extinction|
Least Concern (LC) is an IUCN category assigned to extant species or lower taxa which have been evaluated but do not qualify for any other category. The conservation status of a Species is an indicator of the likelihood of that species remaining extant either in the present day or the near future In Biology and Ecology, extinction is the cessation of existence of a Species or group of taxa. Extinct in the Wild ( EW) is a Conservation status assigned to species or lower taxa the only known living members of which are being kept in captivity or as a naturalized Organisms with a conservation status of critically endangered have an extremely high risk of becoming extinct An endangered species is a population of an organism which is at risk of becoming Extinct because it is either few in numbers or threatened by changing environmental or predation A vulnerable species is a Species which is likely to become endangered unless the circumstances threatening its survival and reproduction improve Threatened species are any species (including Animals Plants fungi, etc Conservation Dependent ( LR/cd) was an IUCN category assigned to species or lower taxa which were dependent on conservation efforts to prevent the taxon becoming Near Threatened ( NT) is a Conservation status assigned to species or lower taxa which may be considered threatened with extinction in the near future although The IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List) created in 1963 is the world's most comprehensive inventory of the global As such they do not qualify as threatened, nor Near Threatened, nor (prior to 2001) Conservation Dependent. Threatened species are any species (including Animals Plants fungi, etc Near Threatened ( NT) is a Conservation status assigned to species or lower taxa which may be considered threatened with extinction in the near future although Conservation Dependent ( LR/cd) was an IUCN category assigned to species or lower taxa which were dependent on conservation efforts to prevent the taxon becoming Many common species such as the Rock Pigeon, Common Juniper, the Snail Kite and Sacred Kingfisher are assigned the Least Concern category. Juniperus communis, the Common Juniper, is a species in the genus Juniperus, in the family Cupressaceae. The Snail Kite, Rostrhamus sociabilis, is a Bird of prey within the family Accipitridae, which also includes the Eagles The Sacred Kingfisher ( Todiramphus sanctus) is a Tree kingfisher found in the Mangroves Forests, and river valleys of Australia,
Species cannot be assigned the Least Concern category unless they have had their population status evaluated. That is, adequate information is needed to make a direct, or indirect, assessment of its risk of extinction based on its distribution and/or population status.
Since 2001 the category has had the acronym "LC", following the IUCN 2001 Categories & Criteria (version 3. 1).  However, around 20% of Least Concern taxa (3261 of 15636) in the IUCN database use the code "LR/lc", which indicates they have not been re-evaluated since 2000. Prior to 2001 "least concern" was a subcategory of the "Lower Risk" category and assigned the code "LR/lc" or (lc).
While "Least Concern" is not considered a red listed category by the IUCN, the 2006 Red List still assigns the category to 15636 taxa. The IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List) created in 1963 is the world's most comprehensive inventory of the global The number of animal species listed in this category totals 14033 (which includes one novel species, Moss Frogs). Rhacophoridae is a family of Frog species also known as Moss Frogs, which occur in tropical regions of Asia and Africa. There are also 101 animal subspecies listed and 1500 plant taxa (1410 species, 55 subspecies, and 35 varieties). There are also two animal subpopulations listed: the Australasian and Southern African subpopulations of Spiny Dogfish. The spiny dogfish, spurdog, or piked dogfish, Squalus acanthias, is one of the best known of the Dogfish, members of the family No fungi or protista have the classification, though only four species in those kingdoms have been evaluated by the IUCN. A fungus (ˈfʌŋgəs is a eukaryotic Organism that is a member of the kingdom Fungi (ˈfʌndʒaɪ Protists (ˈproʊtɨst are a diverse group of eukaryotic Microorganisms Historically protists were treated as the kingdom Protista but this Humans qualify for this category, although they have not been formally assessed by the IUCN. Human beings, humans or man (Origin 1590–1600 L homō man OL hemō the earthly one (see Humus
Many category or ranking systems simply do not list Least Concern species. For example Australia's EPBC Act does not have a category for "not at risk" species, although such species may be found amongst the lists of "unsuccessful nominations" or "removed" (delisted) fauna and flora. For a topic outline on this subject see List of basic Australia topics. The Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act is an Act of the Parliament of Australia that provides a framework for protection of the There are, however, other reasons species may be found on these lists, such as taxonomic changes. The US Endangered Species Act likewise does not list species which are not at risk. The Endangered Species Act of 1973 ( et seq or ESA is the most wide-ranging of the dozens of United States environmental laws passed in the 1970s