Bristly Greenbrier — (c) Ainsley, some rights reserved (CC BY), uploaded by Ainsley
Photo by (c) Ainsley, some rights reserved (CC BY), uploaded by AinsleyiNaturalistCC BY
dog safety reference

Is Bristly Greenbrier safe for dogs?

Smilax hispida

Bristly Greenbrier is a woody, climbing vine native to North America, often found in thickets and woodlands. It is considered non-toxic to pets, though its fibrous nature may cause minor digestive discomfort if consumed in large quantities.

Bristly GreenbrierHairy GreenbrierSmilax hispida
Light
Partial shade to full sun
Habit
Climbing vine
Care
Low

Safety status

Dogs

Generally safe

Consulted references do not classify the plant as toxic for that pet type, while still allowing for mild GI upset if large amounts are chewed.

Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.

What this means for your dog

ASPCA lists Bristly Greenbrier (Smilax hispida) as non-toxic to dogs, with no toxic principle on file. A dog that grabs at the trailing vine in the yard isn't being poisoned; the bigger practical risk is the plant's bristly prickles scratching the muzzle, plus the loose stool that often follows a mouthful of raw, woody fiber.

Sources: ASPCA.

If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.

Dogsconcern notes

Common signs

None expected; however, ingestion of large amounts of fibrous plant material may cause mild vomiting or diarrhea.

Escalation note

This plant is considered non-toxic. If your dog consumes a significant amount and shows signs of distress, contact your veterinarian.

Bring it home

Bristly Greenbrieris generally pet-safe in ordinary household exposure. If you’d like one for your space, here’s a starting point.

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Source evidence

ASPCA Toxic Plant List

toxicology · 99% reliability

Open source

The Bristly Greenbrier is listed as non-toxic to both cats and dogs.

NC State Extension Plant Toolbox

botanical · 94% reliability

Open source

Smilax hispida is a native woody vine known for its prickly stems and dark blue-black berries.

Cats & dogs pagecats page

Same dog verdict

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