A livestock guardian dog (LGD) is a dog type bred for the purpose of protecting livestock from predators.
Livestock guardian dogs stay with the group of animals they protect as a full-time member of the flock or herd.[1] Their ability to guard their herd is mainly instinctive, as the dog is bonded to the herd from an early age.[2] Unlike herding dogs which control the movement of livestock, LGDs blend in with them, watching for intruders within the flock. The mere presence of a guardian dog is usually enough to ward off some predators, and LGDs confront predators by vocal intimidation, barking, and displaying very aggressive behavior. The dog may attack or fight with a predator if it cannot drive it away.[3]