The red wolf (Canis rufus) is the only North American entry on our list of the rarest animals in the world, but it is also one of the most threatened. This species was extinct in the wild by 1980

Red Wolf

This crocodile is smaller in stature than its relatives with the largest specimen captured in the wild being under nine feet long.

Philippine Crocodile

The saola (Pseudoryx nghetinhensis) is a close relative of cattle but more closely resembles a deer. They are sometimes called the Asian unicorn due to their scarcity and their secretive behavior

Saola

The kakapo (Strigops habroptila) is a nocturnal, flightless parrot with a lifespan of 60 years that is native to New Zealand.

Kakapo

The Amur leopard (Panthera pardus orientalis) is a resident of the Amur region of Russia and China.

Amur Leopard

The addax (Addax nasomaculatus) is an antelope that previously ranged across the deserts of Africa.

Addax

The Javan rhinoceros (Rhinoceros sondaicus) is an Indonesian rhino that exists only within one nature preserve on the island of Java.

Javan Rhinoceros

the next entry on our list of the rarest animals in the world, and this rhino is one of the most critically endangered large mammals with populations only remaining in Indonesia.

Sumatran Rhinocero

The single rarest animal in the world is the vaquita (Phocoena sinus). This porpoiselives only in the extreme northwestern corner of the Gulf of California in Mexico.

Vaquita

The Gobi bear (Ursus arctos gobiensis) is a subspecies of brown bears that exist only in the Gobi desert of Mongolia

Gobi Bear