Sorry for your loss. I tell everyone my chicken run is predator resistant, but it's not predator proof. A determined dog can break out of, or into, a dog kennel made from that heavy kennel wire. I use 2X4 welded wire for the fencing and a dog kennel gate panel for my access. It is good enough to keep out curious animals, but a determined dog would be able to break through. I just hope that my fencing slows down the animal enough that my chickens can retreat into the coop for safety. I hope....