I live in a house that is right on the edge of a neighbor and a large valley. I have seen stray dogs in my yard on many occasions - especially a border collie and a tawny pitbull. They are both friendly dogs, but I don't know who owns them. Since they travel together, I know that come this spring when we build our coop and run and put our eight Buff Orpintons outside for the first time the strays in our neighborhood will be very interested. So I need to make a utterly, completely dog-proof run. I cannot shoot these dogs. I am within Pullman City Limits, and cannot discharge a firearm. I will totally call animal control if I need to. But I am not home all the time, and cannot call every time a dog roams onto my property. Here's a picture of the area that we are converting into a chicken run: The area to the left, that still has the 4" gap fencing with the old doghouses will be the run. The old doghouses are going to the dump and the 4" gap fence is too large to keep out smaller predators. We will be making the enclosure with 1"x 2" gap welded wire. It will be ~ 6' tall and completely enclosed with netting across the top to prevent hawks. Questions: The dirt around the run is soft. How deep should I bury the fence to stop digging entry? Should I fill the "trench" with sharp gravel to discourage dogs further? If the dogs pace the fence, bark, and whine at my chickens, will it stress them to the point of not laying, or will they get used to it? Should I put up a "line of sight" barrier like gardening cloth to reduce stress? What other ways could dogs possibly gain entry? Any other suggestions will be welcome. Dogs will be an issue and I would rather mitigate damage by careless owners then suffer losses later.