Reptiles exhibit remarkable reproductive diversity, with many species giving birth to live young rather than laying eggs.

High in the forest canopy, one genus of snake learned how to solve the problem of flight without wings. Here’s how, according ...

A newly described fossil from northern Australia reveals an 8 meter mega-shark that hunted in the age of dinosaurs, long ...

Bite force, a measure of the strength of an animal's bite, helps researchers understand a species' role in the ecosystem.

A long-running and bitterly fought dispute over whether the earliest known hominin had a knuckle-walking gait, like ...

Some adults do indeed have more than 206 bones. These extras, known as accessory bones or supernumerary bones, may occur when ...

A big difference between humans and other apes is the ability to stride easily on two feet. A new analysis of fossil bones shows that adaptations for bipedal walking go back 7 million years.