Animal power, which is the use of animals such as oxen, horses, or donkeys, is often used on the farm for ploughing. Ploughing is the process of turning over the soil to prepare it for planting, and animals can provide the necessary pulling power to operate a plough. While animal power can also be used for other activities such as harvesting, spraying, or planting, ploughing is often the most common use of animal power on the farm.