In this diverse biological world, not all species can get along with each other. That is why humans, dogs, cats, or other animals with allergies – a reaction of the immune system, occur when the body is exposed to certain foreign substances. Allergens are diverse, such as pollen, food, animal dander, etc. That’s because the cat’s immune system misidentifies that protein as a harmful substance or a foreign substance that is attacking it. However, most cat foods contain protein, so any food can cause an allergic reaction in a cat. You can also interpret these as common food allergies in cats.

Common Food Allergies

For cats, food allergies are a relatively common problem. Cats are already very sensitive animals with a rather “fastidious” gut. Therefore, allergies are one of the issues you need to pay attention to when raising a cat. The cause of cat allergies, in many cases, veterinarians cannot determine exactly. Usually, a food allergy is triggered by a certain protein.

The problem is whether you have knowledge about them and timely detect them or not. After researching and synthesizing, here is a list of 5 Common Allergic Food Your Feline Friend May Have that I want to share with you.

5 Common Food Allergies Your Feline Friend May Have

1. Milk and Dairy Products

As we know, milk is an extremely delicious and attractive product. It also contains a lot of essential nutrients for the health and development of the body. However, with cats, sometimes the above benefits of milk are not suitable for them. Milk allergy is one of the common food allergies in cats that any cat owner should be aware of.

I must warn you that cats do not have the enzyme lactose to digest the lactose when they enter the cat’s body. In other words, cats cannot tolerate and process the sugar molecule lactose. The lactose molecules that are not broken down will stay in the cat’s digestive system and cause intestinal problems. Even cats can be allergic to lactose.

However, most formulas today and especially cow’s milk contain this sugar. Although your cat may be intrigued by this drink, be careful when offering her milk. There is one piece of advice that I like: don’t indulge your pet’s preferences, instead, learn how to create healthy preferences for them. Besides, dairy products also have the same potential for causing allergies to cats as milk. Such as cheese, cottage cheese, butter, yogurt, whole milk, etc. 

You know, cats can be attracted to scents from food. In particular, most cats love dairy products. Therefore, be careful and store milk and dairy products out of reach of cats. You can also learn more about some unsweetened dairy products or skim milk for cats to pamper your cat’s preferences. At the same time, you should consult with your veterinarian about the amount of milk that is safe for your cat.

Symptoms of a cat with milk allergy are usually dizziness, vomiting, and diarrhea.

2. Gluten and Corn Products

Corn is an indispensable food in human life. Corn products bring wonderful experiences to our taste buds. And if you read the ingredients list of cat food carefully, you’ll find products from corn products appearing in it.

The most commonly used in cat food are cornmeal and corn gluten meal. With a fairly high-calorie content, fragrant aroma, and low price, cornstarch is the choice of many cat food brands. However, according to the survey, products containing cornmeal are often poor quality meat products. Cornmeal acts as a filler and stimulates the pet’s sense of smell and appetite. Therefore, it is clear that products containing cornstarch are not safe for your cat. It can be allergic at any time.

In particular, corn is a type of wheat, so it contains a lot of gluten. Like lactose, gluten is an ingredient that is difficult for cats to absorb and consume. Cat foods that often use gluten are granular grains. The gluten in these products acts as a binder to form different granules. Gluten when entering the cat’s body in significant amounts can cause cat allergies.

Common symptoms in cats sensitive or allergic to gluten are itchy skin, itching of narrow areas of skin such as behind the ears, between the toes, rashes, etc.

3. Seafood

Seafood is also one of the leading causes of allergies in cats.

Seafood in general is high in protein, an essential nutrient for a cat’s healthy growth. That’s why many cat owners include seafood in their four-legged friend’s diet.

However, seafood is an animal that lives in the sea, a much different habitat. The salinity of the water or the altitude of the water in which the fish live all affect the substances that the fish has. And when cats eat them, those substances affect the cat and can cause allergies, even toxic to the cat’s health. Possible problems are mercury poisoning, allergies to fish or shellfish. Many cat foods and snacks are specially formulated to be safe for cats. But that’s not why you’re subjective. I believe you do not want to have any problems occur with your pet. And a visit to the vet for some advice is essential.

Symptoms when cats are allergic to seafood: dry skin, irritated or itchy skin. The symptoms are often nonspecific and difficult to recognize. The diagnosis of seafood allergy for cats also takes a certain time. Therefore, consider carefully so that you and your cat do not face this health problem.

4. Soybean Products

As a healthy and high-protein food, soy is loved by many people, including me. However, when raising cats and learning about this food, I was quite surprised that cats cannot digest soy well and they may be allergic to one of the nutrients found in soy. The reason is that the protein in soybeans is a vegetable protein. While cats or dogs are carnivores; and they can only tolerate animal protein sources. As you can see, soy not only has no nutritional value for cats but also causes them to suffer from gas or indigestion.

Currently, soy is a fairly common ingredient in granular cat foods to increase the protein content of the product. Be careful if your cat has a history of allergies to soy or soy-meal. On the other hand, eating or being exposed to unsuitable food for a long time can also cause an allergic reaction. Soy allergy has the following manifestations: itching in the mouth, wheezing, red skin, etc.

5. Additives

In the food industry, additives have become a familiar ingredient. However, its safety is still not completely guaranteed, even for humans. Meanwhile, cats have extremely sensitive digestive systems. And additives are one of the factors that cause common food allergies in cats that I want to bring to your attention.

Common allergens are preservatives (to extend the shelf life of the product) and artificial colors (to stimulate the buyer’s vision). They offer no nutritional value to your cat. In many cases, cats can even be allergic to these two substances, causing health problems for your pet. If you have time, I suggest that you make your cat food rather than opting for ready-to-eat foods. Because in reality, it is not easy to avoid products containing the two additives mentioned above. They are too common.


Allergies in cats are very diverse. In different cats, the degree and severity of allergies are also different. As a cat owner, you and I should always focus on their safe and healthy diets.

Admittedly, a cat’s intestinal tract is quite difficult, but that doesn’t mean it’s difficult for you to find a diet that works for your cat’s health. You have learned more about 5 Common Food Allergies Your Feline Friend May Have and their symptoms. That is one of the steps to help you take better care of your cat. There’s always a way to deal with common food allergies in cats, right? And don’t forget to give your cat regular medical checkups.


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