The owner returned with a bucket of water. When Ricardo finished drinking he shook his head from left to right. It seemed he was trying to loosen or lose the metal steering clamp from his mouth, in doing so a long pink tongue spilled out and wagged in the wind.
Before leaving I asked the owner for the horse's name. Then I asked what Ricardo was doing there. The response: "He's working. .. He takes people around the center." Myself: "Is he here everyday?" The Owner: "He works one day, he sleeps one day."