Hay is dried grass or other plants that are harvested and stored for animal feed, particularly for livestock like cows, horses, and sheep. It is typically cut during the growing season when the plants are at their peak nutritional value, then dried in the sun to reduce moisture content before being baled for storage. There are different types of hay, including timothy hay, alfalfa hay, and orchard grass hay, each with varying nutritional profiles. Farmers often choose specific types based on the dietary needs of their animals, ensuring they receive the right balance of nutrients for health and productivity.