IBD, being that it's basically food allergy, is all about diet
, so he has told me to get E.N instead of Z.D to see how kitty's body reacts to it. Trust me, if I have to have them perform the endoscopy I will, but the vet isn't too happy about it. He knows which cells are the trouble makers, and he even explained to me how they work, basically how they "think", so lets hope my cat gets better. He is young, and he's got that going for him. Please let us know how your puppy is doing.