Safety verdict
Consulted references classify the plant as toxic or irritating for that pet type.
Pet ingestion lookup
My cat ate American Bittersweet - what should I do?
Celastrus scandens
Potentially toxic
Contact your veterinarian or an animal poison-control resource now, especially if any amount was chewed or swallowed.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Signs to watch for
Vomiting, diarrhea, and potential gastrointestinal distress.
Escalation note
Ingestion can lead to significant stomach upset; contact your veterinarian immediately if you suspect your cat has consumed any part of this plant.
What to watch for
Most cats show vomiting and diarrhea first. Weakness can follow if more was eaten. Seizures are reported but rare — they signal a serious dose and warrant emergency care.
Time window
ASPCA does not publish a specific onset window — exact timing not well documented. Owners typically see GI signs within hours of ingestion; plan to monitor for 24–48 hours.
When to call the vet
Call your vet or ASPCA Poison Control (888-426-4435) any time you see vomiting, diarrhea, or weakness — and call immediately if your cat seizes, becomes unresponsive, or you saw berry ingestion.
What this means for your cat
American Bittersweet is toxic to cats according to the ASPCA. The bright red-orange berries are the most concentrated source of trouble, but the stems and foliage carry the same alkaloids and can leave a cat sick.
Sources: ASPCA (no first-aid guidance).
Poison-control resources
This page summarizes source-bound plant-safety information and is not veterinary advice.