10 Rarest Animal Types in the World

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Black and Chestnut Eagle

The black and chestnut eagle is primarily found in South America, living in dense, montane forests along mountain slopes and undisturbed wet cloud forests. With fewer than 250 adults remaining in the wild, it is one of the most endangered birds of prey in the Americas 

El Rincon Stream Frogs

El Rincon stream frogs are critically endangered amphibians found in a single location on a plateau in Argentinian Patagonia. They survive the cold winters by living in warm thermal streams and are threatened by invasive rainbow trout and habitat loss due to encroaching cattle.

Northern River Terrapins

Once widespread in West Bengal and Odisha in India, the northern river terrapins are now one of the most endangered freshwater turtles in the world. 

Dinagat Moonrat

The Dinagat moonrat and the Dinagat hairy-tailed rat are rare animals found on Dinagat Island in the Philippines. Their population size is unknown due to their rarity

Hirola Antelope

The hirola antelope, known as the world's most endangered antelope, has seen its population decline to just a few hundred individuals due to habitat loss.

Albany Adders

Albany adders, a critically endangered species of dwarf adder, are one of the rarest snakes in the world. With only 17 known records, their only known location is threatened by various developments.

Roach s Mouse-tailed Dormouse

Roach s mouse-tailed dormouse is one of the least-known and rarest rodents in Europe, with its only known locations in south-western Bulgaria.

Bawean Warty Pigs

Found on the Indonesian island of Bawean, the Bawean warty pigs may number just a few hundred. Deforestation has significantly impacted their habitat.

Golden Langurs

Considered one of the 25 most endangered primates in the world, golden langur populations have declined by as much as 60% in Bhutan. They are also found in Assam, northern India.

Siamese Crocodiles

The critically endangered Siamese crocodile, once widespread in mainland Southeast Asia, is now absent from 99% of its former range, with an estimated 250 mature individuals remaining in the wild.