sensitive stomach

My 11 week golden retriever, Scotch, has been eating Nulo Freestyle Puppy for the past couple weeks, and it doesn't seem to agree with his tummy. Initially he was on the turkey formula and we switched to salmon to see if that would help, but it doesn't seem much better. Anyone have any...

So I've had my puppy Harlow for two months now, shes 16 weeks old. For about the past 4-6 weeks it seems she's had a very sensitive stomach, anything out of her eating routine such as even one small training treat, different water, change in any of the small amount of wet food I give with her...

Hi All, My 3.5 year old Golden develops food intolerances every few months to his dog food. He started off with Royal Canin Large Breed puppy (from his breeder) and we switched him to Canidae after a few months. He was good for a year and started getting diarrhea. So we switched him to Purina...