Both my babies are on Wellness dog food, although it is a great food with wonderful ingredients, they seem to have formed but loose stools on it. Some one has recommended Wellness core instead, this is a grainless food. I was wondering if anyone has tried it. Ekim is on weight management and he needs a food that is low in fat, as he did have a higher fat content in his last bloodwork, he is also a little overweight. He did lose 8 lbs so far. Delila has not liked any food besides the wellness. she is on the skinny side, but she is eating so much better since we switched to wellness. If they continue to have soft stools I will need to switch to anotheer food, anyone have any suggestions that will solve my cubby boy and picky, skinny girls delimma?