What are the rarest mammals in the world?

10. Rare Hainan Gibbon. Rare Hainan Gibbon source. It is estimated that the number of Hainan Gibbons that remain is only about 23. That's why it is considered to be the world's rarest animal living in the South China Sea. read more

Animal Info - World's Rarest Mammals Mammal species with published estimates of worldwide population about 1000 animals* or less (animals are listed in the order of their population estimates, with the rarest listed first). read more

There are only about 23 Hainan gibbons left, making it the world's rarest primate, who live on Hainan Island in the South China Sea. read more

One of the world’s most endangered mammals it lives in the rain forests of the Philippines and was captured on film for the first time last year. read more