|Food allergies account for about 10% of all the allergies seen in cats and dogs. Dogs and cats develop allergies to those foods that are most frequently fed. There is a distinction that needs to be made between food allergies and food intolerances. Food allergies are true allergies and show the characteristic symptoms of itching and skin problems associated with canine and feline allergies. Food intolerances can result in diarrhea or vomiting and do not create a typical allergic response.
Several studies have shown that some pet food ingredients are more likely to cause food allergies than others. In order of the most common offenders in dogs are beef, dairy products, chicken, wheat, chicken eggs, corn, and soy. In cats, the most common offenders are fish, beef, and dairy products. As you may have noticed, the most common offenders are the most common ingredients in both dog and cat foods.