Are Blackberries Poisonous to Dogs?

Fresh, plain blackberries are non-toxic to dogs and are commonly recommended as a low-calorie treat rich in fiber, antioxidants, and vitamins. Feed in moderation: treats should make up no more than 10% of a dog's daily calories. Rough portion guidance by size: extra-small dogs (2-10 lb) about 1 berry, small (11-20 lb) about 2, medium (21-50 lb) 2-5, large (51-90 lb) 5-6, extra-large (91+ lb) 7-8. Wash thoroughly to remove dirt and pesticides. Blackberries contain only trace, naturally occurring xylitol; this is considered safe in the small amounts a dog would normally eat, but feeding very large quantities is not advised. AVOID processed forms: jam, jelly, syrups, and many frozen/packaged berries can contain added sugar or xylitol (an artificial sweetener that is severely toxic to dogs even in small amounts) — always check labels. Remove stems and leaves, which are hard to digest and can be a choking hazard; whole berries can also pose a mild choking risk for very small dogs, so dice or mash for tiny breeds. Wild/foraged blackberries are fine only if you can positively identify the plant; the thorny canes can injure a dog's mouth, paws, or skin. Introduce slowly and watch for GI upset; large amounts of fiber/sugar can cause loose stools.

Can dogs safely eat fresh blackberries?

Yes. Plain, washed fresh blackberries are non-toxic and safe for dogs in moderation. They are not on the ASPCA toxic list and are a low-calorie, antioxidant-rich treat. Keep treats to under 10% of daily calories and adjust the amount to your dog's size.

Is the xylitol in blackberries dangerous to my dog?

Blackberries contain only trace, naturally occurring xylitol, which is considered safe in the small servings dogs normally eat. The real danger is processed blackberry products (jam, jelly, baked goods, some frozen mixes) that may have added xylitol as a sweetener — that form is highly toxic and should be avoided entirely.

What happens if my dog eats too many blackberries?

Overeating typically causes mild, temporary GI upset — vomiting, diarrhea, gas, or stomach discomfort — and stool may look blue or black from the pigment. This usually resolves on its own. Contact your vet if symptoms are severe, persistent beyond 12-24 hours, or if there is blood in vomit/stool, weakness, or collapse (which would suggest a different cause).

• PetMD - Can Dogs Eat Blackberries?
• American Kennel Club - Can Dogs Eat Blackberries?

Last updated 2026-06-25