Can dogs eat blackberries?
Updated 6 August 2026
Yes. Blackberries are safe for dogs, including the wild ones on brambles, in small amounts. The berries carry fibre and vitamin C with less sugar than most fruit. The real risk on a walk comes from lookalike berries growing in the same hedgerow, so only let your dog eat what you have identified yourself.
The detail
Blackberries are one of the easiest fruits to share. At roughly 5g of sugar per 100g they sit at the low end for fruit, and the same weight brings around 5g of fibre.
Plenty of UK dogs learn to pick their own from the bramble line in late August and September. That is fine in itself, with two caveats this page covers: thorns, and the other berries that ripen in the same hedgerows.
As with any fruit, quantity is the limit. A pile of blackberries is a reliable way to give a dog diarrhoea, so a few berries is the serving, not a browse until bored.
Blackberries at a glance
| Sugar | About 5g per 100gLow for a fruit |
| Fibre | About 5g per 100gThe reason portions stay small |
| Anything toxic to dogs | Nothing |
| The real hedgerow risk | Lookalike berries: yew, ivy, holly and othersOnly allow berries you have identified yourself |
How much is sensible
| Dog size | Sensible amount |
|---|---|
| Small (under 10kg)Chihuahua, Jack Russell | Two or three berries, a couple of times a week |
| Medium (10 to 25kg)Cocker spaniel, border collie | Four or five berries |
| Large (over 25kg)Labrador, German shepherd | A small handful, six to eight berries |
| Puppies on solid food | One or two soft ripe ones at most |
Brambles on walks
Letting your dog take ripe blackberries from a bramble is fine, and for many dogs it is a highlight of the autumn walk. Pick from above nose height if you are gathering them yourself, since the lowest fruit gets marked by other dogs.
The plant fights back, so watch the thorns. A scratched nose heals on its own, but check paws and muzzle if your dog dives into the bush rather than picking politely, and look out for limping afterwards.
Roadside brambles collect exhaust residue and field-edge ones may catch crop spray. If the spot would put you off eating the berries yourself, walk on to a better patch.
Blackberries are safe. Unknown berries are not
This is the firm rule that matters more than anything else on this page: a dog that eats berries on walks must only eat the ones you have identified. UK hedgerows and gardens also hold yew, ivy, holly, and other berries that range from stomach-churning to genuinely dangerous.
A blackberry is a cluster of small juicy segments on a thorny bramble, ripening from green through red to purple-black. Berries that grow singly, sit on smooth stems, or hang on evergreen bushes are not blackberries, and the safe assumption is that they are trouble.
Do not rely on your dog's judgement, because dogs that learn brambles will happily try the next bush along. If unidentified berries go down, note what the plant looked like, take a photo, and ring your vet rather than waiting.
Frozen blackberries
Frozen blackberries are the same food at a colder temperature, and they make a decent slow treat in warm weather. Let them soften for a minute for small dogs and seniors with worn teeth.
Check bought bags the same way you would any fruit product. The ingredients list should say blackberries and nothing else, with no syrup or dessert coating.
How many blackberries can a dog have?
A few berries sized to the dog, per the table above. The fibre that makes them a reasonable treat also makes a large helping a laxative, and the darker truth of blackberry season is purple diarrhoea on a cream carpet.
If your dog self-serves from the hedgerow, keep the walk moving after a mouthful or two. A dog left parked by a heavy bramble will eat well past the sensible ceiling.
Blackberry crumble and other desserts
The September glut ends up in crumbles, pies and jam, and none of those belong in a dog bowl. A crumble adds butter and roughly a mug of sugar to fruit that needed neither, and the fat load is the sort of thing that triggers pancreatitis in dogs prone to it.
A stolen mouthful of plain blackberry crumble is a shrug for a healthy dog: note it and move on. The exception is any dessert or jam labelled sugar-free, because some use xylitol, which is toxic to dogs and turns a stolen slice into a vet call.
If your dog overdoes it
Blackberries themselves need no first aid. If your dog eats berries you cannot identify, note the plant, photograph it if you can, and ring your vet straight away rather than watching and waiting. Out of hours, Vets Now runs emergency clinics across the UK.
Common questions
Can dogs eat wild blackberries from brambles?
Yes, ripe wild blackberries are the same fruit as shop ones. Pick above nose height, mind the thorns, and skip bushes beside busy roads or sprayed field edges.
My dog ate loads of blackberries on a walk. What happens now?
Most likely a day of loose, alarmingly purple stools and nothing worse. Offer water and plain meals, and ring your vet if diarrhoea or vomiting runs past a day or two.
My dog ate berries and I do not know what they were
Ring your vet now rather than waiting for symptoms. Note where the plant was and what it looked like, because several UK hedgerow berries are genuinely dangerous.
Can puppies eat blackberries?
Yes, once weaned onto solid food, at one or two soft berries. Save the hedgerow self-service until they reliably leave things on command.
Do blackberry seeds or thorns cause problems?
The tiny seeds pass through harmlessly. Thorn scratches on the nose or paws usually heal on their own, but a limp or a swollen pad after bramble diving is worth a check.
Are cultivated blackberries different from wild ones?
Only in size and sweetness. Both are safe in the same small portions, and shop berries just want a rinse first.