Can Dogs Eat Blackberries? In Moderation

Why it’s fine in small amounts

Blackberries are not toxic to dogs, and AKC calls them potentially beneficial treats. According to AKC, they supply vitamins A, B, C, E and K, omega-3 fatty acids, fiber and antioxidants called anthocyanins, and they carry less sugar and fewer calories than many fruits.

Quantity is the limit. Too many berries can upset a dog's stomach because of the fiber and sugar, and PetMD notes that eating a lot can turn stools blue or black, which can look like blood. Treats of any kind should stay under about 10% of your dog's daily diet.

The real hazards come from processed forms. PetMD says jam and jelly contain far more sugar and should be avoided, and both sources warn about xylitol, which is toxic to dogs. AKC adds that frozen berries often have added sugar or xylitol. Fresh blackberries do contain trace amounts of natural xylitol, which AKC considers safe in a normal serving.

Wild berries are fine if you are certain of the identification, though AKC still advises caution.

Benefits

Provides vitamins, fiber and antioxidants including anthocyanins
Lower in sugar and calories than many other fruits
Easy to freeze or mash into a lick mat as a cooling treat

Risks

Too many can cause gas, diarrhea or an upset stomach from the fiber and sugar
Jam, jelly and sweetened frozen berries are high in sugar and may contain xylitol
Large amounts can turn stool dark, which can look like blood
Wild berries must be identified with certainty

How to serve it safely

Rinse the berries to remove dirt and pesticides and pull off any stems, then serve them whole, halved, mashed or pureed, depending on your dog's size. AKC's examples run from a few berries for a toy breed to roughly a handful for a giant breed, and PetMD suggests 1 for extra-small dogs, 2 for small, 2 to 5 for medium, 5 to 6 for large and 7 to 8 for extra-large dogs.

Fresh berries, or ones you freeze yourself, are the best choice. Check the label of any store-bought frozen mix, jam or fruit snack for sugar and xylitol. Blueberries and strawberries are similar treats.

Related forms

Food	Verdict	Why
Fresh blackberries	In moderation	Rinsed, in small amounts.
Store-bought frozen berries	With caution	AKC says frozen berries often have added sugar or xylitol; read the label.
Blackberry jam and jelly	No	Very high in sugar and may contain xylitol.
Wild blackberries	In moderation	Only if you are certain of the identification, and AKC still urges caution.

If your dog already ate it

A few extra blackberries usually mean gas or a loose stool. Offer water and watch your dog. A lot of berries can turn stool blue or black, so if you are unsure whether it is berry color or blood, call your vet.

Call your vet for repeated vomiting, severe diarrhea, belly pain or poor appetite. Seizures, weakness, loss of coordination or collapse are emergencies. If the berries were in a product that might contain xylitol, call your vet, ASPCA Animal Poison Control at (888) 426-4435 or Pet Poison Helpline at (855) 764-7661 (US; fees may apply) right away. Outside the US, call your local emergency vet. Do not make your dog vomit at home.

Frequently asked questions

Are blackberries safe for dogs?

Yes, in moderation. Both AKC and PetMD say plain blackberries are fine as an occasional treat.

Do blackberries contain xylitol?

AKC says fresh blackberries contain trace amounts of naturally occurring xylitol that it considers safe in a normal serving. The danger is products with added xylitol, like some jams and frozen berry mixes, so read labels.

Why is my dog's poop dark after eating blackberries?

PetMD says eating many blackberries can cause blue or black stool that may look like blood. Call your vet if you are unsure or your dog seems unwell.

Can dogs eat wild blackberries?

AKC says yes if you are sure of the identification and notes no known poisonous plants resemble them, but it still advises caution.

Written from veterinary sources by the Pawsplained editorial team. Not yet reviewed by a veterinarian; this is general information, not a diagnosis or treatment plan. Updated Oct 30, 2026. Editorial policy

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