The horses behind the fence weren't playing along. Rather than posing for us, they were ignoring us, feeding with heads on the ground. I fell back on a technique I came up with a few years ago: I told myself to photograph my subject by not photographing it.
In this case, I decided to focus on the nearby fence, use a large f/stop, and allow the horse to go out of focus. I think it worked. The emphasis is on the fence, and yet we recognize the bright object in the background for what it is, anyway.