There is a lady on one of the horse forums I belong to that has Mini Horse she trained as a therapy horse. He is somewhat of a celebrity in their local town and he would visit the local nursing home (inside) on a regular basis.
He was diagnosed with cancer, this past year and I honestly don't know the outcome of that because, coward that I am, I can't make myself follow the thread. He is such a little sweetie and it breaks my heart to know he is suffering the same Fate as some of the humans he has offered comfort to