What is the third most endangered animal?

According to the International Union for Conservation of Nature (IUCN), the third most endangered animal in the world is the mountain gorilla (Gorilla beringei beringei). Mountain gorillas are critically endangered, with a population estimated to be less than 1,000 individuals. They are found only in the Virunga Mountains of Central Africa, which span the Democratic Republic of Congo, Rwanda, and Uganda. The main threats to mountain gorillas include habitat loss, poaching, and disease.