It’s important to change diets gradually. Switching diets too quiickly can cause vomiting, diarrhea, or excess gas. Any time you decide to change your dog’s deits, you should transition to the new diet gradually in order to give your dog’s system time to adjust to the change. Ideally, these transaction should happen over 7-10 days. **This is just a guideline, and you can increase transition time if your pet is particularly sensitive.