There are endangered animals, and then there are those that are the last of their kind. The world's rarest animal is just that.

The world's only population of wild Devils Hole pupfish shrank to 38 members after two earthquakes greatly affected the ...

After biotechnology and genetic engineering company Colossal Biosciences said it successfully created three dire wolf puppies ...

The world is home to some rare species that seem almost too incredible to be real, reminding us how much more there is to discover in the natural world. Glass frogs have bright green or olive ...

New simulation suggests millions of undiscovered terrestrial species, revealing hidden patterns in biodiversity and animal evolution.

In the cold, lightless Pacific Ocean deep, the seabed is scattered with metal-rich rocks coveted by miners -- and huge numbers of strange and rare animals almost entirely unknown to science.

In the cold, lightless Pacific Ocean deep, the seabed is scattered with metal-rich rocks coveted by miners -- and huge numbers of strange and rare animals almost entirely unknown to science.

Editor's Note: April 8 marks International Rare Animal Protection Day. In China, years of extensive conservation endeavors have yielded positive outcomes. A Chinese wildlife photographer shares ...