Cats
Generally safeConsulted 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.
Sources
cat safety reference
Is Bullbrier safe for cats?
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
What this means for your cat
Cats are not poisoned by Bullbrier — ASPCA classifies Smilax rotundifolia as non-toxic to cats and identifies no toxic principle. The thorny canes and waxy leaves rarely tempt cats, but a curious chew is not a poisoning concern; the worst expected outcome is a small scratch or a self-limiting case of stomach upset from raw plant 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.
Cats — concern 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.
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 AmazonSome links earn us a small commission. They never affect our safety classifications.
Source evidence
ASPCA Toxic Plant List
toxicology · 99% reliability
Bullbrier (Smilax rotundifolia) is non-toxic to both cats and dogs.
NC State Extension Plant Toolbox
botanical · 94% reliability
Smilax rotundifolia is a deciduous, woody vine known for its thorns and climbing habit.
Questions about Bullbrier
Is bullbrier toxic to cats?
Bullbrier (Smilax rotundifolia) is considered non-toxic to cats. It is classified as generally safe, meaning it is not expected to cause poisoning or serious harm if your cat chews on or ingests it.
What happens if my cat eats bullbrier?
Ingesting small amounts is unlikely to cause any problem. If your cat eats a large quantity of the fibrous plant material, mild vomiting or temporary digestive upset is possible due to the physical bulk of the plant rather than any toxic compound.
Should I call my vet if my cat ate bullbrier?
A brief nibble on bullbrier does not require an emergency call. If your cat consumed a significant amount and shows persistent vomiting, lethargy, or distress that doesn't resolve within a few hours, contact your veterinarian to rule out a mechanical GI issue.
What part of bullbrier could bother my cat?
No part of bullbrier is considered toxic to cats, but the plant's tough, fibrous stems and leaves are the most likely culprits for any digestive upset if eaten in quantity — the prickly stems could also cause minor mouth irritation from the physical spines rather than any chemical toxin.
Same cat verdict
Related plants for cats
Acorn Squash
Cucurbita pepo
Acorn squash is a popular edible winter squash known for its ribbed, dark green skin and sweet, yellow-orange flesh. It is widely cultivated for culinary use and is considered safe for household pets.
Generally safe for cats & dogs.
Banana Squash
Cucurbita maxima var. banana
Banana squash is a large, edible winter squash variety known for its elongated shape and sweet, dense flesh. It is considered safe for household pets, though large ingestions of raw plant material may cause minor digestive discomfort.
Generally safe for cats & dogs.
Bur Gourd
Cucumis anguria
Bur Gourd is a vining plant in the cucumber family known for its small, spiky, edible fruits. It is generally considered safe for household pets, though its fibrous nature may cause minor digestive discomfort if consumed in large quantities.
Generally safe for cats & dogs.