Dogs: The Worst Chicken Predator

A dog on its owner's property is a pet. A dog on someone else's property is a predator. I consider a domestic dog the worst chicken predator because they are out all times of day and they kill for sport, not food, and have little fear of humans.
When you've done all you can to be a responsible chicken owner and the pet of an irresponsible dog owner trespasses, you have a decision to make if you intend to protect your livestock, poultry and your investment.
Dogs do not get a pass simply because they are dogs. Keep your dogs at home, period.
The Georgia Statute regarding killing dogs to protect livestock:
§ 4-8-5. Performing cruel acts on, or harming, maiming or killing dogs
(a) No person shall perform a cruel act on any dog; nor shall any person harm, maim, or kill any dog, or attempt to do so, except that a person may:
(1) Defend his or her person or property, or the person or property of another, from injury or damage being caused by a dog; or
(2) Kill any dog causing injury or damage to any livestock, poultry, or pet animal.
(b) The method used for killing the dog shall be designed to be as humane as is possible under the circumstances. A person who humanely kills a dog under the circumstances indicated in subsection (a) of this Code section shall incur no liability for such death.
(c) This Code section shall not be construed to limit in any way the authority or duty of any law enforcement officer, dog or rabies control officer, humane society, or veterinarian.