Bullbrier — (c) botanygirl, some rights reserved (CC BY), uploaded by botanygirl
Photo by (c) botanygirl, some rights reserved (CC BY), uploaded by botanygirliNaturalistCC BY
Pet safety reference

Bullbrier

Smilax rotundifolia

Bullbrier is a hardy, woody vine native to North America, often recognized by its prickly stems and rounded leaves. It is considered non-toxic to pets, though its fibrous nature may cause minor digestive discomfort if consumed in large quantities.

CatbrierCommon GreenbrierRoundleaf GreenbrierSmilax rotundifolia
Light
Full sun to partial shade
Habit
Vining
Care
Low

Safety status

Cats & 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.

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.

Catsconcern notes

Common signs

None expected; however, ingestion of large amounts of fibrous plant material may lead to mild vomiting or temporary digestive upset.

Escalation note

Generally considered safe. If your cat consumes a significant amount of the plant and shows persistent signs of distress, contact your veterinarian.

Dogsconcern notes

Common signs

None expected; however, ingestion of large amounts of fibrous plant material may lead to mild vomiting or temporary digestive upset.

Escalation note

Generally considered safe. If your dog consumes a significant amount of the plant and shows persistent signs of distress, contact your veterinarian.

Bring it home

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

Shop on Amazon

Some links earn us a small commission. They never affect our safety classifications.

Source evidence

ASPCA Toxic Plant List

toxicology · 99% reliability

Open source

Bullbrier (Smilax rotundifolia) is non-toxic to both cats and dogs.

NC State Extension Plant Toolbox

botanical · 94% reliability

Open source

Smilax rotundifolia is a deciduous, woody vine known for its thorns and climbing habit.

cats safety pagedogs safety page

Same genus

More from the Smilax genus

Same safety verdict

Other plants with the same verdict

Same growing conditions

Plants for the same room