Can Dogs Eat Blueberries?
Yes — blueberries are safe for dogs and are widely considered one of the best fruit treats you can offer. They are low in calories, high in antioxidants, and naturally small in size — making them perfect as training rewards or casual snacks. Blueberries are sometimes called a 'superfood' and for good reason: they contain an impressive range of beneficial compounds including anthocyanins, resveratrol, flavonoids, vitamin C, vitamin K, manganese, and dietary fibre. They are a far healthier choice than commercial dog biscuits for dogs who need to watch their weight.
Nutritional Benefits of Blueberries for Dogs
Blueberries are exceptionally rich in antioxidants — compounds that neutralise free radicals and may help reduce inflammation and cellular damage. Anthocyanins, which give blueberries their distinctive deep blue-purple colour, have been studied for their potential benefits in supporting cardiovascular health, cognitive function, and immune response. Research in both humans and animals has shown that blueberry consumption can improve certain markers of oxidative stress.
For ageing dogs in particular, the antioxidant content of blueberries may be especially valuable. Older dogs experience increased oxidative stress in the body, and diets rich in antioxidants may help slow some aspects of the ageing process — particularly cognitive decline. Some commercial senior dog food formulations now include blueberry extract for this reason.
Blueberries also provide good dietary fibre, which supports healthy gut motility and a balanced microbiome. Vitamin C supports immune function, and vitamin K is important for blood clotting and bone metabolism. Manganese supports enzyme function and healthy joints.
How to Serve Blueberries to Dogs
Fresh blueberries are ideal — simply wash them and offer them directly. Their small size means they do not need to be cut for most dogs, though for very small breeds or puppies, you can halve them to reduce any choking risk. Frozen blueberries are equally safe and many dogs enjoy them as a cool treat during warm weather. The cold temperature also means dogs tend to eat them more slowly.
You can mix blueberries into your dog's regular food as a topper, freeze them with a small amount of plain, unsweetened kefir or yoghurt in a Kong toy for mental enrichment, or simply use them as individual training treats — their small size makes them ideal for this purpose. Dried blueberries are technically safe but are much more concentrated in sugar and should be offered only in very small quantities.
How Many Blueberries Can Dogs Eat?
As with all treats, blueberries should be offered in moderation. The general guideline is that treats — including fruit — should make up no more than 10% of a dog's daily calorie intake. Blueberries contain approximately 57 calories per 100g, making them quite low in calories compared to commercial dog treats. A serving of 10–15 blueberries is a reasonable portion for a medium-sized dog (around 10–20 kg).
For small dogs under 5 kg, 5–8 blueberries is appropriate. Large dogs can enjoy up to 20–25 blueberries. Dogs with diabetes or obesity should have their fruit intake discussed with a vet, as even low-sugar fruits contain natural sugars that can affect blood glucose. Start with a small amount when first introducing blueberries to check your dog does not have any individual digestive sensitivity.
Blueberries in Dog Food — What You Need to Know
Blueberries and blueberry extract have become a popular ingredient in premium commercial dog foods, particularly senior formulations and those marketed for joint or cognitive health. The inclusion of blueberry in commercial dog food is generally considered beneficial, as the antioxidant compounds survive the manufacturing process to some degree.
However, the amount of blueberry in commercial dog food is typically quite small relative to a therapeutic dose. If you want your dog to benefit from the antioxidant effects of blueberries in a meaningful way, offering fresh blueberries as a supplemental treat is a simple and affordable way to achieve this. Just be aware that too much of any single food — even a healthy one — is not recommended.
Other Superfood Treats for Dogs
If you are interested in giving your dog nutritionally beneficial treats beyond blueberries, there are several other options worth exploring. Strawberries provide a similar antioxidant profile with the addition of vitamin C. Blackberries are safe and rich in vitamins C, K, and manganese. Raspberries are safe in small amounts (they do contain trace quantities of naturally occurring xylitol, so limit to a small handful). Watermelon flesh (seeds and rind removed) is extremely hydrating. Cooked sweet potato is rich in beta-carotene and fibre. Cooked broccoli in small amounts provides sulforaphane and vitamin C.
Always avoid grapes, raisins, sultanas, cherries (pits especially), avocado, and any fruit preserved with added sugar or syrup. When introducing any new food, start small and monitor for any digestive upset or allergic response.