What is the most likely reason that horses and mountain goats have hooves?

Mountain goat hooves are comprised of two split toes, also called cloven hoofs. They use it for balance and climbing; cloven hoofs can spread apart and the inner pads between serves as traction. In contrast to horse's hoof that has evolved into one solid toe.

Ifound this on google “according to the findings, a foramen magnum positioned toward the base of the skull is found not only in humans, but in other habitually bipedal mammals as well.” i hope this you for what your looking for