I think my Lucy (avatar dog) has some allergy issues. She constantly licks and chews on her feet. The inside of the pads are really red once she gets done. She has had on and off ear infections as well. Originally she was eating Purina One. I switched both dogs to Blue Buffalo and then a few weeks ago to Taste of the Wild salmon flavor. (The dogs didn't particularly care for Blue Buffalo and it made them really gassy.) I don't know what else to do about her chewing. I could put bitter apple on it, but it seems better to fix the underlying problem. We have been to the vet. She is usually focused on the ear problems. We have pretty much taken care of that issue with ear drops and the occasional round of medicine. The paw chewing indicates to me that there is something else going on. Any thoughts on what is going on and how to stop her?