Cows can’t understand human language, but they can distinguish between a friendly and an unfriendly tone of voice. They can also tell from the tone of voice whether someone is serious and sincere.
After a joint ride it goes without saying that the horse needs to be washed and groomed. Rider and horse enjoy such care to the fullest. Just having been curried, the horse is returned to the box.
The Mustang symbolises freedom and America’s Wild West. Mustangs were brought to America by the Spanish as domesticated horses, and became feral in America. Nowadays, the horses live in large herds.