Less common, but possible are:
• Any certain protein. Though rare, canines can be allergic to chicken, turkey, beef, lamb, rabbit, bison, duck, or fish.
• Eggs
• Dairy (though technically this is an intolerance, because canines have trouble digesting milk products)
What to do:
1. First, note that when a dog is suffering from a food allergy, and a switch is made, it can take 8 to 12 weeks to see significant improvement.
So, choose wisely, do not veer off course, and be patient for those 2 to 3 months. As your Yorkie is making his way to be free of the allergens, you can also be treating symptoms (and we'll cover that ahead in Step 2).
2. If food allergies have caused your Yorkie to have vomiting and/or diarrhea,
it can help to withhold food for 12 hours (making sure that your dog stays hydrated), then place your puppy or dog on a bland diet of just 1 protein and 1 starch for 3 days before changing to a new, regular diet.
The most gentle proteins are lean beef or white skinless chicken. Good choices for the starch include plain white rice or sweet potato.