In the fall/winter, we have a special ration we feed the sheep, but have had trouble keeping the horse from taking more than her fair share.
Linda had an idea to put a board across that the sheep could go under, but horse not get through. So, a couple of 2×4 brackets inside the door, a 2×4, and there you have it – sheep running in for a treat. It won’t prevent the door from closing and is easily removed by just sliding it out of the brackets.
The horse can just sit and look – rebuffed from the treat inside!