Pet Food Allergen
Corn Allergy in Dogs and Cats
Corn is one of the most misunderstood ingredients in pet food. Frequently labelled a "filler," it is actually ~9% protein and highly digestible when ground finely — pet-food industry digestibility data puts cooked corn at 85-90%. True corn allergy is uncommon, though specific dogs do react.
Prevalence
~2-5% of food-allergic dogs react to corn (Mueller 2016) — less common than lamb, fish, or even soy.
Label names that contain corn
Any of these on an ingredient list means corn is present.
Ingredient pages
Symptoms that point to corn
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Factual reference based on AAFCO ingredient definitions, FDA guidance, and peer-reviewed veterinary literature cited above. Not medical or veterinary advice. Consult a veterinarian for decisions about your pet's diet.