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7 Foods to Boost Your Dog’s Immune System

Heed these takeaways:

  • There are several ways to help strengthen your dog’s immune system, but feeding the right diet is crucial.
  • Your dog’s gut microbiome is responsible for up to 70% of his immune system.
  • There are many everyday foods that can help strengthen your dog’s immune system.
  • Immunity-boosting foods for dogs include carrots, blueberries and broccoli.

We want our dogs to be by our side for as long as possible. To do that, we need to build up their immune system to protect them from illness and disease.

There are several things you can do to keep your pup in the best possible shape, but one of the main factors that contributes to a healthy immune system is diet. Your dog’s gut microbiome contains about 70% of his immune system, so what she eats is crucial to her overall wellbeing.

Happily, there are many everyday “human foods” that you can also give your dog to strengthen and support their immune system. Here are seven of the best.


These delicious little berries are often listed as a “superfood”, and with good reason. They’re low in calories but high in a wide range of other beneficial nutrients, making them a great snack for your fur-baby.

A rich source of antioxidants, fiber, and vitamins C and K, blueberries can provide a much-needed boost for your pup’s immune system.


Another fruit that offers myriad health benefits for people and pets, bananas can make a great healthy treat for your dog.

Because they’re rich in vitamin C, they promote a strong and robust immune system. And because they’re also a good source of potassium, magnesium and fiber, bananas are loaded with lots of other goodness your furry friend will love. 

Just remember that bananas should only ever be given in moderation — an occasional treat rather than a regular part of your dog’s daily diet.


Yogurt may be an important part of your daily breakfast, but did you know it can offer plenty of health benefits to your pup as well?

Not only does it contain plenty of calcium and protein, but the active cultures in yogurt can provide probiotics for your pet. Probiotics are essential for gut health, helping to maintain the balance between good and bad bacteria in your dog’s gut.

Just make sure that you only ever give your pup plain, unsweetened yogurt without any preservatives. Also note that some dogs may struggle to digest yogurt properly, so don’t over-do it.


The humble carrot is an extremely versatile ingredient and one that can help protect your pup against illness and disease. Carrots are an excellent source of fiber, potassium and vitamin A, which strengthens your pup’s immune system and helps her stay fit and healthy.

Dogs can eat cooked or raw carrots as long as they’re cut into small chunks, and chewing on raw carrots can even boost your pup’s dental health. So if you’re searching for a low-calorie treat your dog will love, it’s hard to go past these crunchy delights.

Along with carrot, there are also several other “human foods” that can make healthy treats for your dog.


Broccoli is one of those vegetables that kids all around the world love to hate, no matter how good it is for them. But broccoli is good for dogs as well, and even better, many pups also love the way it tastes.

Whether cooked or raw, broccoli is an excellent treat when given in small quantities. Not only is it high in vitamin C for a stronger immune system, but it’s a rich source of fiber to help aid healthy digestion.


Canned pumpkin is a great snack when you need to soothe your pup’s upset stomach, and it can also provide a welcome boost to your pet’s immune system.

Pumpkin is rich in vitamins A and C, iron and potassium, all of which contribute to your dog’s overall wellbeing and help keep illness at bay. There’s plenty of fiber in pumpkin to aid with digestion, while it’s also low in calories if you’re trying to help your pet lose weight.

Just make sure to never give your dog canned pumpkin that features any sugar or spices. 

Bell peppers

Last but not least on our list of immunity-boosting foods for dogs is the humble bell pepper. While red bell peppers offer the most nutritional benefits, it’s also safe to give your dog green orange or yellow bell peppers.

High in antioxidants and important vitamins, bell peppers support a healthy immune system and can help reduce inflammation. They also contain beta carotene for healthy skin and coat, and are low in calories to make a healthy snack.

As you can see, there are plenty of everyday foods that can support and strengthen your pup’s immune system — you might already have one or more of them in your fridge or pantry. They’re simple to add to your dog’s diet, a tasty snack for your pet, and can increase your pup’s chances of living a long and healthy life.

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