'Oxen' in the Bible

For it is written in the law of Moses, Thou shalt not muzzle the mouth of the ox that treadeth out the corn. Doth God take care for oxen?

Is God simply thinking about the oxen? Or is it really in our interest that He speaks? Of course, it was written in our interest, because it is His will that when a plough-man ploughs, and a thresher threshes, it should be in the hope of sharing that which comes as the result.