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