Iluveggers
Crossing the Road
You could always put up a fence. Although the neighbors are a fault for letting their dog wander, there are true accidents that happen with dog owners too. Out of my surrounding neighbors, there are 6 dogs plus my two. On very rare occasion, someone’s dog will run out the front door or slide out of a leash collar. No one purposely lets their dog wander. I installed a 6 ft fence around the area my chickens range in, because I want to keep them safe. You never know when a wandering dog will show up. Your situation is a bit different as it doesn’t seem like their dog getting in your yard is a fluke accident, but offering protection for your chickens would keep them safe in any circumstance.