Here's why:
* Body Structure: Horses are built for speed. They have long legs, slender bodies, and powerful muscles designed for running. Oxen, on the other hand, are bred for strength and endurance, with shorter legs and a more stocky build.
* Training: Horses are typically trained for racing and other speed-related activities. Oxen are often used for plowing, hauling, and other tasks that require strength and stamina.
While an ox might be able to reach a faster speed for a short burst, a horse will ultimately be much faster over longer distances.