Nature's wonders often defy human logic. Animals possess astonishing abilities honed by evolution for survival. Octopuses ...

In zoology, the term “bipedal” refers to animals that use only two legs for walking. There are several groups of modern species considered habitual bipeds, meaning two-legged walking is their normal ...

The tegu lizard (left) walks with a low-to-the-ground sprawling pose, while the contrasting greyhound (right) stands upright. (Peter Bishop/Harvard University) (CN) — What do an alligator, a greyhound ...