* To promote the foal's independence. Weaning helps foals learn to eat solid food, drink water from a bucket, and interact with other horses.
* To reduce the mare's milk production. Mares' milk production will naturally decrease as the foal begins to wean, but weaning can help speed up this process.
* To prevent health problems. Nursing foals can put a lot of strain on a mare's body, so weaning can help her to recover and regain her strength.
* To prepare the foal for sale or training. Weaning is often the first step in preparing a foal for sale or training, as it allows the foal to become accustomed to being handled and separated from its mother.