That's great! I don't think you'll need to supplement any vitamins, but you might want to look into the prebiotics, probiotics, and digestive enzymes...Those are good for them...I'm not familiar with their particular products, but I know of some that are good. Actually, I give Miko and Emma get their prebiotics and probiotics from cottage cheese and organic nonfat yogurt, but since Otis has allergies, I'm not sure what he's allergic to and if he can eat milk products.
Organic, UNrefined coconut oil is supposed to be great for dogs with allergies/skin issues. Actually, it's good for their overall health too
