Georgia Code 4-8-5.
(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 person or property, or the person or property of
another, from injury or damage being caused by a dog; or
(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.
(2) Kill any dog causing injury or damage to any livestock or
poultry.
(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.