Hi everyone! I have a 9 year old Mal. She recently developed a sensitivity to her dog food. She was eating the Nutro chicken and sweet potato healthy weight for large breed. She' s eaten the Nutro/Natural Choice line of food her whole life and it was always good for her. So now we're looking for a limited ingredient, senior, sensitive stomach, large breed dog food. Has anyone fed their Mal the Nutro limited ingredient large breed lamb and sweet potato? Or Holistic Select brand? Any recommedations would be greatly appreciated! Thanks!