Think you’ve seen it all? Think again. In this fascinating journey across the globe, we reveal 100 of the rarest and most extraordinary animals most people don’t even know exist.

CHICAGO -- A pair of rare Amur leopard cubs were born at the Brookfield Zoo Chicago earlier this month, the zoo announced ...

Two Amur leopards, members of an endangered species, were born at Brookfield Zoo Chicago on July 14, the zoo announced Tuesday. Zoo officials say both cubs and Mina, the 8-year-old first-time mother, ...

Amur leopards are native to mountainous regions of Russia and China, capable of withstanding cold climates due to their thick coats. These same coats have also made the cats the target of poachers, ...

One of the rarest whales on the planet spotted south of Galveston, fisherman says Rice's whales are one of the world's most endangered marine mammals and there are believed to be only about 50 to ...

Saola (Pseudoryx nghetinhensis) The Saola Working Group calls this ungulate native to the mountains of Laos and Vietnam one of the rarest large animals on Earth. Citing habitat loss and poor ...

The Sumatran rhino is one of the world’s rarest animals, but the bittersweet news is that we can at least identify that the species is in need of our help. For other endangered animals, it can ...

Hawaii's native tree snails, known as the "jewels of the forest," are rapidly disappearing. Some of the most imperiled only live in human care now, safeguarded 24 hours a day.