The mysterious "worm lizard" has finally found its evolutionary home; the legless animals are closely related to a group of lizards named the lacertids, a new fossil intermediate indicates. The worm ...

It’s not a snake. It’s not a worm. And as far as legless lizards go, the Mexican mole lizard is a strange one. Hours after setting up a pitfall trap that is designed to catch any animal that walks ...

Why bother running on hind legs when the four you've been given work perfectly well? This is the question that puzzles Christofer Clemente. For birds and primates, there's a perfectly good answer: ...