Red blood is the exception, not the rule. Evolution has painted it green, purple and white in animals that push physiology ...

The natural world is full of animals that seem to defy logic, blurring the line between reality and imagination. Some look ...

Earth is full of bizarre creatures, with more being discovered each year. As documented in the scientific journal Species ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The story of two of ...

There are some strange mating rituals in the wild. Birds court through dance and song, and some males fight for females’ ...

Strange animals found at the bottom of the ocean challenge our current understanding of life, scientists have said. Researchers diving almost 10,000 meters deep into the Pacific Ocean found tube worms ...

Customs and Border Protection (CBP) officers in Chicago have uncovered a series of bizarre and unsettling items in agricultural shipments, including disemboweled goats, giraffe feces and dismembered ...

The Earth is home to some amazing animals, and many of them are well-known. Everybody knows how quick cheetahs are, how big elephants can grow, and how adorable chipmunks can be. But there are some ...

(CNN) — The story of two of the strangest animals on the planet just got a little stranger, thanks to clues revealed by a lone fossil specimen that scientists now say represents a long-extinct ...