Are Blueberries Poisonous to Dogs?

Plain fresh or frozen blueberries are a safe, low-calorie treat for dogs and are NOT on the ASPCA list of foods dangerous to dogs (unlike grapes and raisins, which ARE toxic — do not confuse the two). They provide antioxidants (anthocyanins), fiber, vitamins C and K, and manganese. Caveats: (1) Treats — including blueberries — should make up no more than ~10% of a dog's daily calories; typical portions range from 1-2 berries for very small dogs up to a small handful for large dogs. (2) Feeding too many at once can cause temporary GI upset (gas, loose stools, mild vomiting). (3) Small round berries can pose a choking risk for small breeds, puppies, or dogs that gulp food — cut or mash them for these dogs. Dried blueberries are chewier and a greater choking risk; avoid. (4) Feed ONLY plain, unsweetened berries. Avoid canned, sweetened, syrup-packed, or flavored products and any baked goods (muffins, etc.) — these may contain excess sugar or xylitol, an artificial sweetener that is highly toxic to dogs. (5) Dogs with diabetes or on prescription diets should only have high-sugar fruits with veterinary approval.

Are blueberries toxic to dogs?

No. Plain blueberries are not toxic to dogs. They are not on the ASPCA's list of foods dangerous to dogs and are considered a safe, healthy treat in moderation. Do not confuse blueberries with grapes/raisins, which ARE toxic to dogs.

How many blueberries can my dog safely eat?

Treats should be no more than about 10% of daily calories. As a rough guide: 1-2 berries for very small dogs, around 10-15 for medium dogs, and a small handful for large dogs. Feeding too many at once may cause mild, temporary digestive upset such as gas or loose stools.

Are there any blueberry products I should avoid giving my dog?

Yes. Avoid canned, sweetened, syrup-packed, or flavored blueberries and any baked goods like blueberry muffins. These can contain excess sugar or xylitol, a sweetener that is highly toxic to dogs. Also avoid dried blueberries for small dogs due to choking risk. Stick to plain fresh or frozen berries, cut up for small dogs.

• PetMD — Can Dogs Eat Blueberries? (reviewed by Sandra C. Mitchell, DVM, DABVP)
• Whitney Veterinary Hospital — Can Dogs Eat Blueberries?

Last updated 2026-06-25