What characteristic of an ox's back allows the yoke to rest without causing undue strain during maximum effort?

Answer

It is characteristically broad and deep.

The ox's back is characteristically broad and deep, which provides a stable platform for the yoke to rest without causing undue strain or injury when the animal exerts its maximum effort.

What characteristic of an ox's back allows the yoke to rest without causing undue strain during maximum effort?
animalbodyphysicaltraitboi