Have you talked to Denise? Wonder if he was doing that before or maybe just nervous because he is out of his normal surroundings. Is he on the same food that she had him on? I think she told me that she doesnt leave his food out for him all the time, just water and then gives him his food , like three times a day or something like that. Diahrhea is not fun at all, that is such a nasty smell and mess. Hope it stops real soon!