My 4 1/2 yr old Chihuahua is allergic to just about everything. He is allergic to potatoes, soybean, alfalfa, oats, green peas, fish mix, pork, salmon, duck, and peanut. Suggestions please. He weighs 5 pounds and is an indoor dog.
Allergic or food sensitivities? Food allergies are rare. Best to work with a veterinarian, he may need a prescription food till you get an accurate diagnosis as to what he can tolerate.
Then you should rule out environmental allergies if his symptoms continue. Talk to your vet.