Hay is dried grass or legumes that are often used as animal feed. Farmers cut the grass when it is still green and then dry it in the sun. Once dried, the hay is stored in bales and can be fed to animals like cows, horses, and sheep during the winter months when fresh grass is not available. In addition to being animal feed, hay can also be used for other purposes. It can serve as bedding for livestock, help with erosion control, or even be used in gardening as mulch. Overall, hay is an important resource in agriculture.