I mowed the area outside the fence where the cows are grazing. It was much greener and voluminous than the stuff inside the fence. Out of curiosity I shook out the mower bag to see if they would eat it. They devoured it! It had plenty of vetch, fescue, clover and few weeds in it. What I found interesting was how they sorted through the pile, picking their favorites (the vetch) first and then eating what was left. Is there any danger that they may eat too much or too fast? Thanks.