Definition - What does Threatened Species mean?
A threatened species is a plant, animal, or other living organism that is becoming rare and that may become in danger of extinction if current trends continue. The international Union for the Conservation of Nature (ICUN) divides threatened species into three categories: vulnerable species, endangered species and critically endangered species. The US National Wildlife federation on the other hand, distinguishes between threatened and endangered species.
Safeopedia explains Threatened Species
As human activities and impacts expand, habitat destruction becomes an increasing threat to the continued existence of the species that were dependant on these habitats for survival. In addition, practices such as the overharvesting of fish and pollution can place species at risk. In the US, 1,361 species of plants and animals are considered either threatened or endangered