I have a 5 month old English Bulldog.  She was eating Iams, which was what the breeder has her on.  She started recently to have diarrhea and the vet is concerned that she could have IBD.  The good news, the vet said, is that puppies grow out of IBD.  I decided to switch her food anyway.  I just recently bought Merrick, grain-free, pork and sweet potato.  I feel confident in this brand; however there is a fairly high protein content.  I had read a few articles about how Bulldogs should not have food with too high of a protein content, but other articles contradicted this.  I am wondering what the truth is.  If you could please shed any light on this subject matter, it would greatly be appreciated.  Thank you!