I came across a video on facebook this morning about a guide horse called Panda. I can't paste that link here -- seems you need to be in facebook to see it. But you can Google "Panda guide horse" and it should come up. What I loved is that the person speaking said "we train using positive only" and that makes the horse "continue to work enthusiastically". Also interesting is that these horses can live for 40-50 years, keeping them in service for a very long time! http://www.guidehorse.com/ This one shows Panda being trained: In this video I loved learning about "intelligent disobedience". I think the clippity-clop hooves must be useful feedback for the blind person.