category of endangered species

Those of the planet's flora and fauna which are threatened with extinction. Hunting and poaching to fuel the trade in ivory, horn, skins, fur and feathers have long been a threat to already endangered species. Pollution, agricultural expansion, loss of wetlands, deforestation and other erosion of habitats have been added to the hazards. Human activity was responsible for most of the animals and plants known to have been lost in the past two centuries.