To start with, I would just choose one of those protein sources and feed just it for a couple weeks. If it is the problem then when you increase the amount of it that you are feeding, the itchiness should increase too. Sometimes when the symptoms are mild, it takes longer to figure out what is causing it, especially if the symptoms are mild enough that you aren’t even sure if you are looking for a food allergy. It isn’t going to matter if you unbalance her diet short term, so don’t worry about that for now. I would start with just the beef and See Spot and see if you eliminate symptoms, then go to the whole carcass rabbit and maybe add a leafy green to it, but not much else. Since chicken is most likely, I would save it for last.
Once I finally got Micah symptom free for a bit, I can tell really fast if he has gotten something he is sensitive to. His skin gets hot and turns pink even before the itching begins. Bailey may have something environmental going on, since you say the itching isn’t constant. With a food allergy, I expect you to notice thinning hair, especially on a short haired dog.
