Adverse reactions to food affect less than 10% of all dogs and cats.1
Corn is NOT a common cause of adverse food reactions in pets.
1 Health status and population characteristics of dogs and cats examined at private veterinarypractices in the United States. Elizabeth M. Lund, DVM, MPH, PhD; P. Jane Armstrong, DVM,MS; Claudia A. Kirk, DVM, PhD; Linda M. Kolar, DVM, MPH; Jeffery S. Klausner, DVM, MS
2 Small Animal Clinical Nutrition, 4th edition, page 437