
Adverse reactions to food are quite common in both dogs and cats. However, contrary to common believe, only few cases of adverse food reactions are due to true food allergies. Adverse food reactions represent a group of disorders that are defined by gastrointestinal, dermatological, and less commonly respiratory signs in response to ingestion of a certain food. It should be remembered that there are other specific conditions that are either thought to be due to or worsened by diet that are not considered adverse food reactions such as acute pancreatitis, megaesophagus, or portosystemic shunts.