I heard a big ruckus out in the pen, raced out and caught one of our "yellow dog" rescues high-tailing it out the back w/ one of my girls in his mouth. I yelled at him to drop it, which he did, and she limped back to her flock (a little bruised and gimpy but ok). I was so **** mad, I grabbed that dog, drug him over to the chix pen and beat the ever-lovin tar outa him. I know u PETA people wouldn't agree, but it WORKED. It's been 6 mos and he doesn't go even remotely close to the chickens. EVER. What I've always understood is that, once a dog gets the taste of blood in their mouth, they can't ever be broke of that drive to kill. And dogs are the only animals (besides humans) that kill for sport. I told my husband if I ever catch any of our dogs killing chickens, I WILL shoot it dead. (He just said , "I promise I won't hurt you chix, honey, cuz I wouldn't want u to shoot me!!!"). Tell your neighbor she has a choice: pen her dogs 24/7/365 or you will shoot to kill them if they even step foot on your property. Farm laws will back you up.