It is easy to assume that iconic animals such as tigers, elephants, and leopards will always be part of the natural world.

Leviathan melvillei was one of the most terrifying marine predators to ever exist, dominating the oceans millions of years ...

The thylacine died a year later, and although unverified wild sightings persisted for decades, the species is now considered ...

One of the most unusual animals in the world was the thylacine, which was a marsupial with a dog-shaped body and the stripes ...

Ancient DNA reveals that cave lions were a distinct evolutionary lineage that split from modern lions more than a million ...

The Cozumel dwarf fox, a rare species previously known only from secondhand reports and fossil records, has been discovered ...

From the Vaquita to the Javan Rhinoceros, discover five endangered animals facing extinction. Learn about the threats they ...

By Will Dunham June 4 (Reuters) - The cave lion was one of the biggest cats to ever live, prowling a huge swathe of territory ...

Conservationists often raise the young of endangered species in captivity before releasing them into suitable habitats as ...

In April of 2025, headlines across the world announced that the dire wolf had been brought back from extinction. This 130-150 lbs wolf species, about 25% heavier than modern-day gray wolves, had not ...

Climate change is pushing two iconic Antarctic species — the emperor penguin and the Antarctic fur seal — toward the brink of extinction, a new assessment finds. The new listings, published Wednesday ...