Life on Earth started out microscopically small, but it didn’t stay that way for long. Here are five of the biggest creatures ...

About 95 million years ago, a juvenile crocodyliform nicknamed Elton lived in what is now southwest Montana at the edge of ...

Over the past few hundred years there have been many famous animal extinctions. Most recent animal extinctions are all down ...

Many people around the world are obsessed with finding animals that are presumed extinct. Although this may sound impossible, animal rediscoveries happen more often than you might think. Some ...

Dodo birds could return from extinction in just "five to seven years," according to a company that specializes in reviving ...

With its latest accomplishments, Colossal Biosciences expects to functionally restore the dodo within the next 5 to 7 years.

A new pack of Mexican gray wolves has arrived at Seattle's Woodland Park Zoo, offering visitors a chance to see these critically endangered animals in the Livin ...

Many of New Zealand's unique birds are heading toward extinction. So the country is taking on an ambitious conservation ...

When scientists want to trace how a species has changed over time—and predict its prospects for survival—they turn to DNA.

The endangered species list may change under the Trump administration. After biotechnology and genetic engineering company Colossal Biosciences said it successfully created three dire wolf puppies ...