Learn how fossils from Arizona’s Petrified Forest National Park revealed that a Late Triassic crocodile relative may have ...

A "peculiar" ancient relative of the crocodile which experts believe began life on four legs before, in adulthood, it learned how to walk on just two has been revealed in a new study. Named ...

Researchers discovered that a 215-million-year-old reptile started life on four legs and switched to two as an adult.

Researchers believe these creatures started out on four legs and later began walking on two legs as they grew.

12121212. Hey, how come none of these chickens have got four legs. Chickens don't have four legs. Oh, yes, they do. You want me to take him out? All right. He probably won't like this real well. Matt ...

The chicken was aptly named 4Runner. The chicken was aptly named 4Runner. The chicken was aptly named 4Runner. Farm animals born with abnormalities often have a bleak future. This chicken's unique ...