We want to put up 100' of 6-foot-high privacy fence between us and a neighbor. They have horses and dogs and a wire fence. The dogs are fairly hostile and don't like it when we're near the fence. We want better screening from the dogs and also just want better privacy. Shrubs are part of the solution but right now I need some information about fences. I plan to put up a standard board fence: 4x4 posts, 2x4 or 2x6 horizontal rails, 1/2x6 vertical boards with only expansion room between them. They would take down the wire fence. Will that be OK with horses? Will they walk down the rails or damage the top scratching their necks? If I put the rails on our side then it's stonger but I have to be on the other side to maintain the fence. Maybe a couple strands of wire on the livestock side? Is there any likely liability here? If a horse wants to escape - and they have - there will be easier places than this but I don't want to be responsible if a horse gets injured on the fence, especially since some of them might be boarded. I spent some Google time on this and didn't learn much. Everything I saw was positive, nothing mentioned construction details or problems. Any thoughts? I know something about fences and something about chickens but this is as close as I've lived to horses.