The hay bale

You were working at this ranch for a few days. You've been doing normal ranching things. But one day, the ranch introduce some horses to the ranch, and you were assigned to take care of them. And before you sent out, they tell you something weird: that is to not eat any of the horses hay. You were confused by this but you dont say anything, and begin to care for the horses. As you were caring the horses, you always notice there was always someone watching you, probably to stop you from eating the hay, but you dont complain.