Hi....my dog has a sensitive stomach too, since I've switched him to a grain-free diet his stools have been firm. I also give him chicken, beef & sweet potatoes on rotation.
Here are the websites if you would like to research them...
http://www.earthbornholisticpetfood.com/us/
http://www.petcurean.com/for-dogs/go/
Here are the websites if you would like to research them...
http://www.earthbornholisticpetfood.com/us/
http://www.petcurean.com/for-dogs/go/