Here are some other sounds horses make:
* Whinnies: A high-pitched, excited sound often used to communicate with other horses.
* Snorts: A sharp, explosive sound used to express annoyance, alarm, or playfulness.
* Nicker: A soft, gentle sound often used to greet other horses or humans.
* Roar: A loud, deep sound that can be used to express aggression or fear.
* Squeal: A high-pitched, piercing sound that can be used to express pain or excitement.
So, while "neigh" is the most common sound, horses can make a variety of other sounds depending on the situation!