Philippine crocodiles are amongst the most endangered of the freshwater crocodiles. With an estimated declining mature adult population of 92-137 member.
2. Kakapo
The kakapo is a native of New Zealand and is a nocturnal, flightless parrot with a 60-year lifespan. Human invasion of the island nation and the consequent introduction of cats to the area completely destroyed the Kakapos.
3. Addax
Antelope known as the addax (Addax nasomaculatus) once roamed the African deserts. They are now restricted to the Nigeria region of Termit Tin Toumma.
5. Amur Leopard
The Amur area of Russia and China is home to the Amur leopard (Panthera pardus orientalis). Its population has increased from an estimated 14 adults in 2005 to approximately 84 mature adults in the present.
6. Gobi Bear
Only the Gobi desert in Mongolia is home to the Gobi bear (Ursus arctos gobiensis), a subspecies of brown bear. There are no Gobi bears kept in captivity, and there are less than 40 mature adults left in the wild.
6. Saola
Although it is a close relative of cattle, the saola (Pseudoryx nghetinhensis) resembles a deer more. Threats to the saola include habitat loss and incessant hunting to fill the local demand for bushmeat and medicinal supplies.
7. Sumatran Rhinoceros
The Sumatran rhinoceros (Dicerorhinus sumatrensis) is the next item on our list of the rarest creatures in the world. With populations only existing in Indonesia, this rhino is one of the most critically endangered big mammals.
8. Javan Rhinoceros
Rhinoceros sondaicus, a species of Indonesian rhino, is only found in one wildlife park on the island of Java. Since the species is extinct throughout its former range, there are no other herds, and this preserve is home to 68 animals.
9. Red Wolf
Our list of the rarest creatures in the world only includes one animal from North America, the red wolf (Canis rufus), but it is also one of the most endangered.
10. Vaquita
The single rarest animal in the world is the vaquita (Phocoena sinus). This porpoise lives only in the extreme northwestern corner of the Gulf of California in Mexico.