'Lowing' in the Bible

And the kine took the straight way by the way to Beth-shemesh; they went along the highway, lowing as they went, and turned not aside to the right hand or to the left; and the lords of the Philistines went after them unto the border of Beth-shemesh.

And Samuel said, What meaneth then this bleating of the sheep in mine ears, and the lowing of the oxen which I hear?