The flat-headed cat is one of the rarest cats in the world. In some areas they've just been seen for first time in 30 years.

While America’s national parks are known for majestic scenery and bucket-list adventures, some of their most extraordinary ...

What is Alabama’s rarest animal? It thrives in darkness below the surface, hidden in an ecosystem most people never see.

Add Yahoo as a preferred source to see more of our stories on Google. Americans celebrated the 50th anniversary of the Endangered Species Act late last year, serving as a reminder of the 1,662 ...

The vaquita (Phocoena sinus), an elusive porpoise found only in the shallow waters of Mexico's northern Gulf of California, ...

The reconstruction of the vaquita, whose numbers barely reach double figures in the wild, is designed to help research and conservation efforts ...

Do you have an American Foxhound at home? Or perhaps a Grand Basset Griffon Vendéen? If you do, congratulations! You're the proud parent of one of this country's rarest breeds. The American Kennel ...

What is the Rarest Type of Cloud in the World? Learn about the rarest type of cloud in the world, its unique features, and ...