Blue Basics is great for sensitive tummies. It is grain free and has only one meat source either duck, turkey, or salmon. It is chicken free as some dogs can't handle chicken. Be cautious when switching food, because if the switch is not done gradually any new food will cause a sick tummy. A food switch should take place over a 2 week period of time. replace only an 1/8th of their meal with new food and increase amount everyday till you are only feeding the new brand of dog food.
Athena- Long Coat GSD -CGC
Sinister Black- GSD