What a beautiful rooster. I'm sure the neighbor won't apologize or compensate you for the loss. They almost never do. Maybe you can check out the predator/ coops section for ways to give roaming dogs, etc. a big sendoff. Are you allowed to use some electrified fence wire around your coop and run? I'm so sorry for your loss and furious with folks who think their dog has the right to wander onto another person's property and do damage.