A study reported by Phys.org shows that despite the radically different bodies of flies, mice, and humans, their walking movements share a common pattern. The research found that joints farther from the center of the body move faster than those closer to the body, a rule that appears to hold across these very different species.
The study acknowledges that the three animals move in different ways because of their physical differences, but the underlying joint-speed relationship is consistent. This suggests a shared biomechanical principle that may be fundamental to how animals walk, even when their body plans differ enormously.
Further details about the research methodology or the number of species studied were not included in the source. The finding is presented as a demonstrated result, but the source does not specify whether any exceptions exist among other animals.