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).

(*P) indicates that there are one or more links to pictures of the animal in the "Profile" section at the top of its web page.

Graduates of  'World's Rarest Mammals' 


  1. There are many other mammals with populations less than 1000 animals for which population estimates are not available.
  2. Only wild populations are meant to be included.
  3. Many of the population numbers are rough estimates. However, as Schaller has noted: "...even a well-considered guess has validity when evaluating status of endangered species." (Schaller 1998, p. 202)
  4. Need help with proving the financial impact of losing rare animals? Crunch Digits covers topics like capital gains yield calculations - for free.

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Last modified: June 18, 2009

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