Can Dogs Eat Blueberries? A Small Fruit with Big Benefits

Ever dropped a blueberry on the floor and watched your dog swoop in before you could react? It might have left you wondering: can dogs eat blueberries safely? The short answer is yes — most dogs can enjoy them as a healthy, low-calorie treat.

Blueberries are packed with antioxidants, vitamins C and K, and fibre¹—nutrients that can help support your dog’s immune system, digestion, and overall wellbeing.

Studies show that dietary antioxidants—like what's found in fruits such as blueberries—are associated with enhanced cell protection in cats and dogs².

Jocelyn LambieJunior Nutritionist

Are Blueberries Good for Dogs?

Yes, they can be! These little berries are sometimes called a “superfood” for a reason. Their antioxidants help protect cells from damage and help support a healthy immune system, while their natural sweetness makes them a great swap for store-bought treats that can be high in sugar or fat. The fibre in blueberries can help maintain healthy digestion — as long as you don’t overdo it. With any new addition to your dog’s diet, be sure to consult your veterinarian.

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When Are Blueberries Bad for Dogs?

In moderation, blueberries are safe. But as with any treat, portion size matters. Too many can lead to tummy upset or diarrhea, especially in smaller breeds. They also contain natural sugar, so diabetic dogs should only have them in small amounts and under vet supervision.

If your dog has food sensitivities, always start slow — one or two berries at first — and watch for any signs of discomfort or allergies.

How Many Blueberries Can a Dog Eat?

It depends on size. As a general guideline:

• Small dogs: 2–5 blueberries per day

• Medium dogs: 6–10 blueberries per day

• Large dogs: up to a small handful

Remember: Treats should only make up about 10% of your dog’s daily calorie intake. The rest should come from a complete and balanced diet.

Can Dogs Eat Blueberry Muffins?

This is where things get tricky. While plain blueberries are fine, blueberry muffins aren’t recommended. Many recipes include sugar, butter, or artificial sweeteners like xylitol — which is toxic to dogs. Even “healthy” muffins can contain too much fat and sugar for regular consumption.

If you’d like to bake something special, look for dog-safe recipes using whole-grain flour, no added sugar, and fresh blueberries only.

Are Blueberries Poisonous to Dogs?

No — plain, fresh, or frozen blueberries are not poisonous to dogs. But products containing blueberries can be, depending on the other ingredients. Always check labels and avoid anything with xylitol, chocolate, spices like nutmeg or high sugar content.

Tips for Serving Blueberries Safely

• Wash thoroughly to remove pesticides or residue.

• Serve fresh or frozen — both are fine.

• Mash them for small dogs or mix them into food for a fun texture.

• Freeze a few blueberries in an ice cube tray with water for a summer treat.

The Bottom Line

So, can dogs have blueberries? Absolutely — in moderation, they’re a safe and nutritious addition to your dog’s diet. Packed with antioxidants and flavour, these tiny fruits offer a natural way to support your pup’s health.

As with all treats, it’s about balance. A few blueberries here and there can add a little joy (and nutrition) to your dog’s day — and maybe even yours, too.