Hypoallergenic products are suitable for the needs of dogs and cats with transient or chronic food intolerances. Usually hypo products, they have only one animal protein and are designed to avoid possible allergic dermatological and gastrointestinal reactions, preferring animals with fine and more 'rare' meat than the common chicken, turkey, pork and beef so as not to overstimulate the animal's digestive system.

Not all animals are allergic to the same things. Beef, for example, believed by many to be the main allergenic protein, yet it could well be tolerated by a person sensitive to many other substances. Hypoallergenic products and foods are those that cause the least reactions in dogs and cats.

To increase their energy and nutritional value, hypoallergenic products are often supplemented with plant proteins such as peas, rice, and potatoes.