My westie is 5 and has suffered from diahorrea after lots of tests they found she suffered from pancreatitis and therefore went onto royal canin anallergenic, its been a god send. The food has helped her tremendously she has just had a flare up of her pancreatitis but instead of high vets fees its a quick trip to the vets for liquid base meds and she will be back to normal, flare ups will happen but not so much coz of the food Bailey is on..