Can dogs eat blueberries?
Updated 5 August 2026
Yes. Blueberries are safe for dogs and one of the best training treats in the fruit bowl. They are small, around 1 calorie each, and need nothing more than a rinse. The one serious mistake to avoid is confusing them with raisins, which are toxic to dogs.
The detail
Blueberries are about as easy as sharing fruit gets. There is no core, no pip to remove and no peel, and each berry carries roughly 1 calorie.
Vets Now describes them as a snack whose antioxidants help protect a dog's cells. A complete dog food already covers everything a dog needs, so treat that as a bonus rather than a reason to feed handfuls.
The one serious note is mistaken identity. Blueberries are safe and raisins are toxic to dogs, and the two look alike enough that a mixed pack of dried fruit or a dropped handful of trail mix deserves real care.
What is in a handful of blueberries (about 50g)
| Calories | Around 29 kcalRoughly 1 kcal per berry |
| Sugar | Around 5g |
| Fibre | Around 1g |
| Anything toxic to dogs | NothingThe danger is mistaking a raisin for a blueberry, not the berry itself |
How much is sensible
| Dog size | Sensible amount |
|---|---|
| Small (under 10kg)Chihuahua, Jack Russell | Three or four berries a day at most |
| Medium (10 to 25kg)Cocker spaniel, border collie | Five to eight berries |
| Large (over 25kg)Labrador, German shepherd | Eight to ten berries |
| Overweight or diabetic dogs | A couple of berries is fine, but ask your vet if diet is managed |
How many blueberries can a dog eat?
Work to the table above: three or four for a dog under 10kg, up to ten for a Labrador-sized one. At around 1 calorie a berry, that stays comfortably inside the usual guide of treats making up under a tenth of daily calories.
A raided punnet is a stomach-upset question, never a poisoning one. Expect soft, dark stools for a day and mention it to your vet only if the upset lasts.
Frozen blueberries
Straight from the freezer, blueberries are a genuinely good training treat. They are cheap, keep for months, and the cold makes them a favourite on hot days.
For very small dogs, let them soften for a minute or hand them over one at a time, since a frozen berry is firm. The sugar does not change with the temperature, so the same counts apply.
Dried blueberries and the raisin mix-up
Plain dried blueberries are safe, but drying concentrates the sugar, so a few count for a small handful of fresh ones. Check the label for added sugar and oils before sharing.
The real danger is the mixed pack. Dried blueberries, cranberries and raisins travel together in trail mixes and baking aisles, and raisins are toxic to dogs.
If your dog grabs a dropped dried fruit and you cannot be certain it was a blueberry, treat it as a raisin and ring your vet. Battersea's toxic foods list makes the same point about raisins hiding in cakes, biscuits and cereals.
Common questions
Can puppies eat blueberries?
Yes, one or two at a time once they are on solid food. They make a soft, low-calorie training reward, and small portions keep young stomachs settled.
My dog ate a whole punnet of blueberries. Should I worry?
No toxin is involved, so the likely result is soft, dark stools for a day. Offer water, skip other treats, and ring your vet only if vomiting or diarrhoea carries on past a day or two.
My dog ate something from a bag of mixed dried fruit. What now?
Treat it as a raisin incident unless you are certain it was not. Raisins are toxic to dogs even in small amounts, so ring your vet with your dog's weight and what the pack contained.
Can dogs eat blueberry muffins?
A stolen bite of a plain one is no drama, but do not serve them. Muffins are mostly sugar and butter, and any sugar-free bake needs a xylitol check because that sweetener is extremely toxic to dogs.
Are blueberries good for older dogs?
They are a sensible treat choice, since they are low in calories and Vets Now credits their antioxidants with protecting cells. They do not replace anything in a complete diet, so keep them as a treat rather than a supplement.
Can diabetic dogs have blueberries?
They are one of the lower-sugar fruits, but a managed diabetic diet leaves little room for extras. Ask your vet before adding anything, including fruit.