A species (pl.: species) is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can...

An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction...

introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a...

An invasive species is an introduced species that harms its new environment. Invasive species adversely affect habitats and bioregions, causing ecological...

Speciesism (/ˈspiːʃiːˌzɪzəm, -siːˌzɪz-/) is a term used in philosophy regarding the treatment of individuals of different species. The term has several...

Species is a 1995 American science fiction horror film directed by Roger Donaldson and written by Dennis Feldman. It stars Ben Kingsley, Michael Madsen...

In zoological nomenclature, a type species (species typica) is the species name with which the name of a genus or subgenus is considered to be permanently...

number of lists of fictional species: List of fictional extraterrestrials (by media type) Lists of fictional alien species: A, B, C, D, E, F, G, H, I,...

On the Origin of Species (or, more completely, On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle...

the IUCN Red List of Threatened Species identified 5220 (2754 animals, 1 fungus, 2464 plant, 1 protist) endangered species, subspecies and varieties, stocks...