Millions of animals are at risk, but what are the rarest animals in the world? These are some of the most endangered animals, ...

Throughout the night, great potoos emit a loud, moaning growl that has earned the bird a mythical status, with some communities believing the sounds to be children calling for lost parents.

So, whether you believe it or not, here is a list of bizarre extinct animals that once lived on ... making Opabinia one of the most distinct and enigmatic creatures in the fossil record.

The octopus is one of the ocean's most incredible marine life species. This one may even share a similar sleeping trait with ...

Most sharks rely on continuous water flow through their gills to breathe. Scientists believe they enter an ideal state instead of deep sleep, allowing them to keep swimming.

The story of the team’s incredible discoveries is told in First Animals, a documentary from The Nature of Things. ‘The world’s most important animal fossils’ The fossils of the Burgess ...

some animals use speed or camouflage, while others rely on bizarre defenses. Sperm whales dive over 3,000 meters deep to escape threats, holding breath for up to 90 minutes, evading most predators.