[Cassidy D]

I just took my dog in today and the vet said she has a UTI and that she does have crystals in her urine and her urine also has a ph of 8. She has been eating Orijen Original for about 5 months now. Is there any evidence to prove that grain free diets cause utis and crystals??? Y vet suggested PURINA!! There is no way I am feeding my dog that garbage.