The animal kingdom is made up of millions of species, many of which seem very unusual and may make people wonder how, or why, the animal evolved the way it did. Within the animal kingdom, most people ...

(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 ...

Meet some of the most bizarre animals you've ever seen. You'd think they came from another planet, but they're just really ...

Explore the strange animal behaviors science can’t fully explain in this roundup of nature’s enduring mysteries.

An artist’s impression depicts Kryoryctes at Dinosaur Cove in Australia. New research supports the hypothesis that Kryoryctes is a common ancestor of both the platypus and echidna. - Peter Schouten ...