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 ...

Animals can simplify the brain control of their limb movements by moving a joint with just one muscle that operates against a spring made of the almost perfect elastic substance called resilin. This ...

Discover the fascinating world of bipedal animals, from waddling penguins and hopping kangaroos to upright-standing flamingos and ostriches. This article explores how various creatures, including apes ...