Fight tests are common in countries where the breed is still in aboriginal stage, or in the process of formation. Despite adverse reputation of commercial dog fights, fight tests are aimed to reveal a dog's willingness and ability to fight predators. In countries with highly developed open field sheepherding, major livestock herd losses may be caused by predation from feral dogs and wolf-dog hybrids, and the livestock guardian dogs must be able to protect the sheep from those. The fight tests were established to maintain this important breed trait.