Everywhere that I've read about horses and fire, the owners have covered their eyes. About the grain though, I will not give it until we are out of the pasture. I'll just stop and wait or walk slowly behind them. I want them to know that good things might be on the other side of the fence:')
Well, equally important, in your setting, you don't want to get mobbed by the rest of the herd. Walking out there with a bucket of grain might be dangerous ;~D