I have a 7.5yr old Dane. Luckily the only thing I have found that he is allergic to is mango and bee/wasp stings. My sister has a dog that we suspected had a chicken allergy but it turned out that it was flea allergies. From the research I did at the time, the best thing to do is put your dog on a limited ingredient diet such as Nature’s Variety Instinct grain-free, limited ingredient diet. It comes in turkey, lamb, duck, and rabbit. Because the TOTW formula you are currently feeding is lamb based, I would choose one of the other protein sources to try. I believe if it is truly food allergies you should start seeing some improvement in as little as a week but it can take 4-6 weeks for all the symptoms to completely clear up. Once all of the symptoms are gone, you can add one ingredient at a time and watch your dog’s reaction to see what she is allergic to. That’s my two cents. Hopefully someone else with more experience with allergy dogs will chime in. Good luck!
-Caroline
