Can Dogs Eat Blueberries? Benefits, Risks and How Many

Blueberries might be the most convenient fruit treat there is. There's nothing to peel, pit or core, they're low in calories, and they're the right size to use as training rewards. The only real catch is for very small dogs, and for blueberries that come baked into something else.

Yes, dogs can eat blueberries. Plain fresh or frozen blueberries are a safe, low-calorie treat for most dogs. The main caution is choking: whole blueberries, especially frozen ones, can lodge in the throat of a tiny dog, so cut or mash them for small breeds.

Are blueberries good for dogs?

Blueberries contain fiber, vitamin C, vitamin K and plant compounds called anthocyanins, which give them their color and act as antioxidants. The AKC describes blueberries as a fruit rich in antioxidants and fiber and a good treat option for dogs.

It's worth keeping that in proportion. A dog on a complete and balanced food already gets the vitamins it needs, and a few berries won't prevent disease. The real advantages are practical:

Low calories. A single blueberry has roughly 1 calorie, so you can give several without blowing the treat budget.
Ready to use. No prep beyond a rinse, which makes them handy on walks and in training.
Low fat and no salt. A far better reward than cheese, deli meat or table scraps.

That's why our guide to fruits dogs can eat puts blueberries in the plain "yes" group, with choking for small dogs as the catch.

Risks of feeding blueberries to dogs

Blueberries are not toxic to dogs. The risks are about size, amount and form.

Choking. A whole blueberry is about the size of a small dog's windpipe opening. Firm or frozen berries are the bigger concern, and dogs that gulp treats are the most at risk. For toy and small breeds, halve or mash them.

Too many at once. A handful eaten by a small dog can cause loose stool, gas or vomiting. The fiber and natural sugar add up.

Sugar. Blueberries are low in sugar compared with bananas or mango, but they still contain some. That matters for diabetic or overweight dogs.

Allergies. Uncommon, but any new food can cause itching or stomach upset. Start with one or two.

Blueberry products. Muffins, pancakes, pies, jams, blueberry yogurt and trail mixes bring sugar, fat and sometimes xylitol, chocolate or raisins. See below.

Wild berries. Not every small blue or black berry is a blueberry. Some wild berries are toxic to dogs, so don't let your dog graze on bushes you can't identify. Blueberry bushes in your own garden are fine, though a dog eating its way through one may get an upset stomach.

How many blueberries can a dog eat?

Treats should stay under 10% of your dog's daily calories, with the rest coming from a complete and balanced food. Blueberries are low in calories, so the limit is usually set by the stomach, not the calorie count.

These are rough guides for a healthy adult dog, using regular-sized fresh blueberries:

Dog size	Example breeds	Blueberries per day, as a rough guide
Extra-small (under 10 lb)	Chihuahua, Pomeranian	3 to 5 berries, halved or mashed
Small (10 to 25 lb)	Dachshund, French Bulldog	5 to 10 berries, halved for the smaller dogs
Medium (25 to 50 lb)	Australian Shepherd, Springer Spaniel	10 to 15 berries
Large (50 to 90 lb)	Labrador, Boxer	15 to 25 berries (a small handful)
Giant (over 90 lb)	Great Pyrenees, Mastiff	Up to about 30 berries

If your dog gets other treats the same day, give fewer. The dog treat calculator works out your dog's daily treat allowance from weight and activity.

How to prepare blueberries for dogs

Rinse them like you would for yourself.
Remove stems and leaves, and throw out soft or moldy berries.
Size them for your dog. Halve or mash for toy breeds and puppies; whole is fine for most medium and large dogs.
Freeze them. Frozen blueberries are a crunchy summer treat. Let them sit a minute for small dogs, or mash them first.
Mix them in. A few berries on top of kibble, or stirred into plain unsweetened yogurt and frozen in an ice cube tray, make an easy enrichment snack.
Use them for training. Their size makes them a decent low-calorie reward for dogs that like them.

Can puppies eat blueberries?

Yes, once they're eating solid food. Puppies tend to gulp, so cut blueberries in half or mash them, and give only a few. Their nutrition has to come from a complete and balanced puppy food, so berries are a tiny extra. Ask your vet if your puppy has a sensitive stomach.

Dogs with health conditions. Check with your vet first if your dog has:

Diabetes: blueberries are low in sugar compared with many fruits, but they still count toward blood glucose control.
Obesity: blueberries can be a good swap for richer treats, as long as the total treat allowance goes down.
Pancreatitis or chronic stomach problems: blueberries are low in fat, but these dogs often need a strict diet with no extras.
Kidney disease: many of these dogs are on a prescription diet, so ask before adding anything.

Blueberries in other forms

Can dogs eat frozen blueberries?

Yes. Plain frozen blueberries are safe and make a good cooling treat. They're harder than fresh ones, so halve, mash or slightly thaw them for small dogs and puppies to lower the choking risk. Check the bag says "blueberries" and nothing else.

Can dogs eat blueberry muffins or pancakes?

It's best not to share them. A plain blueberry muffin or pancake isn't toxic, but it's high in sugar, butter and calories, and some recipes add raisins, chocolate chips or nuts. Low-sugar and "keto" bakes may use xylitol, which can cause a dangerous drop in blood sugar in dogs. Syrup on pancakes adds even more sugar. If your dog ate one, check the ingredients; for xylitol, use the xylitol toxicity calculator and call your vet.

Can dogs eat dried blueberries?

Only plain, unsweetened ones, and only a few. Drying concentrates the sugar, and many brands add sugar or oil. Dried blueberries are also often sold in mixes with raisins or dried cranberries. Raisins are dangerous for dogs in any amount; if your dog ate a mix that contained them, use the grape and raisin toxicity checker and call your vet right away.

Can dogs eat blueberry yogurt or blueberry jam?

Skip both. Flavored yogurts and jams are high in added sugar, and some contain xylitol. Plain unsweetened yogurt with a few fresh blueberries stirred in is the better option.

What is a blueberry facial for dogs?

That's a grooming treatment, not food. It uses a blueberry-scented cleanser on the face. We explain it in what a blueberry facial for dogs is.

What to do if your dog ate too many blueberries or a blueberry product

Ate a lot of plain blueberries. Most dogs will get, at worst, loose stool, gas or a bit of vomiting. You may also notice blue or purple stool, which is harmless. Offer water, skip treats for a day and watch.

Signs of choking. Gagging, pawing at the mouth, trouble breathing, or blue gums need immediate help. Get to a vet right away.

Call your vet if you see:

vomiting or diarrhea that lasts more than a day
blood in the stool or vomit
belly pain, weakness or not eating

Ate a muffin, pancake, trail mix or other product. Check the label for xylitol, raisins, chocolate or macadamia nuts. If any are listed, call your vet, an emergency clinic or the ASPCA Animal Poison Control Center at (888) 426-4435 (a fee may apply). You can look up other ingredients in our toxic to dogs checker.

FAQ

Can dogs eat blueberries every day?

Yes, a few blueberries a day is fine for most healthy dogs, as long as all treats together stay under 10% of daily calories.

Are blueberries safe for small dogs?

Yes, but cut them in half or mash them. Whole blueberries, and especially frozen ones, can be a choking hazard for toy breeds.

Can blueberries change the color of my dog's poop?

They can. A lot of blueberries can make stool look dark blue, purple or black-flecked. That's harmless, but black, tarry stool without blueberries is a reason to call your vet.

Can dogs eat blackberries and raspberries too?

Blackberries and raspberries are generally considered safe in small amounts. Raspberries contain a little natural xylitol, so keep raspberry portions small. Grapes are not a berry you can share: they can cause kidney failure.

Do blueberries help a dog's eyes or brain?

Blueberries contain antioxidants, and there is research interest in their effects, but there's no good evidence that feeding blueberries prevents eye or brain problems in dogs. Treat them as a healthy snack, not a remedy.

The bottom line

Blueberries are one of the easiest and safest fruit treats for dogs: low in calories, no pits or peels, and the right size for rewards. Rinse them, size them for your dog, and cut them for tiny breeds and puppies. Skip muffins, pancakes, jams and dried-fruit mixes, and ask your vet first if your dog has diabetes or another condition that needs a strict diet.