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 Bristly Greenbrier safe for cats?
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
What this means for your cat
Bristly Greenbrier is safe for cats — ASPCA classifies Smilax hispida as non-toxic to cats with no toxic principle on file. A curious nibble of the spiny vine isn't a poisoning risk, though the prickles themselves can scratch a cat's mouth and a mouthful of tough fiber may produce a brief, self-limiting bout of vomiting.
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 cause mild vomiting or diarrhea.
Escalation note
This plant is considered non-toxic. If your cat 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
The Bristly Greenbrier is listed as non-toxic to both cats and dogs.
NC State Extension Plant Toolbox
botanical · 94% reliability
Smilax hispida is a native woody vine known for its prickly stems and dark blue-black berries.
Questions about Bristly Greenbrier
Is Bristly Greenbrier toxic to cats?
Bristly Greenbrier (Smilax hispida) is considered non-toxic to cats. It is classified as generally safe, meaning it is not expected to cause poisoning if your cat chews on or ingests part of the plant.
What happens if my cat eats Bristly Greenbrier?
No toxic symptoms are expected, but ingesting large amounts of the plant's fibrous material may cause mild vomiting or diarrhea due to the bulk and texture of the vine rather than any toxic compounds.
What should I do if my cat ate a lot of Bristly Greenbrier?
Because the plant is non-toxic, a small nibble is unlikely to require any action. If your cat consumed a significant amount and is showing signs of GI distress like repeated vomiting or diarrhea, contact your veterinarian.
Does the fibrous texture of Bristly Greenbrier pose any risk to cats?
The main concern with large ingestions is digestive irritation from the plant's fibrous, woody material rather than chemical toxicity. Non-toxic does not mean unlimited safe consumption — large quantities of any fibrous plant matter can upset a cat's stomach.
Same cat verdict
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