When I switched I didnt see a difference for a good 1mnth to 1mnth 1/2! He barely licks his paws and when he does he had just came in from outside so i think its enviromental...With Cooper he needs to get a good balanced diet b/c he is still a puppy and the veggie diet isnt giving him everything he needs. The food issue could be figured out with allergy panel. If he isnt and is good keep up with them Fromm. If hives start then it could be that but I assume it would have happend already! The others will have more Hope all goes well Meg!