Russell, if your dog was healthy why did you switch foods? Did you gradually transition to the new food? If you do a sudden change they will get diarrhea. Can you explain what symptoms she has? I ised Costco food for so long and I feel guilty for not noticing that throwing up once or twice a week is not normal. I thought it happened due to sensitive stomach. Ever since switching to Acana duck and pear my 3 dogs do so well. I recently started to mix 1/2 of American Journey salmon and sweet potato and they love it.
