Be careful not to give too much fruit if he has any kind of yeast problems with his skin. The sugar in fruit can really impound the problem. A little is probably fine because of all the great vitamins and enzymes but just don't over do it. Also, I read that citrus can cause stomache irritation so watch out for that. My dogs love any kind of melon!
Blueberries they like too. But you can also give them some vegetables like carrots raw, zuchini raw, parsley which is good to help with the digestive system. Also plain non fat yogurts, and for diahhrea you can give them a tablespoon of canned pumpkin in their food NOT the pilling the pure pumpkin it will say 100% pumpkin and it will be the only ingrediant in it. There are a lot of things you can give them but don't over do it with anything
I wonder why onions are on the list...what would they do... only reason why I am asking is cause Titus got ahold of a good chunk of onion that fell off the cutting board the other day, it took me like 5 minutes to get it away from the little bugger by then it was all mushed up and partly chewed... he loved the darn thing! Crazy dog!!