Cats
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources
cat safety reference
Is Begonia safe for cats?
Begonia spp.
Begonias are popular ornamental plants known for their diverse foliage and vibrant flowers. They contain soluble calcium oxalates which can cause irritation if ingested by pets.
Begonia spp.Rex BegoniaTuberous BegoniaWax Begonia
- Light
- Bright indirect light
- Habit
- Mounding or trailing
- Care
- Moderate
Safety status
What this means for your cat
Cats — toxic. ASPCA classifies begonia as toxic to cats; the toxic principle is soluble calcium oxalates, concentrated most heavily in the underground tubers. A curious cat that bites a leaf usually walks away with mouth pain and drool, but a cat that digs and chews into the tuber can develop more serious oral and GI signs.
What to watch for
Most cats show salivation/drooling and vomiting within minutes to a few hours of chewing leaves or stems. Look for pawing at the mouth, head shaking, or refusing food — signs of oral irritation from the calcium oxalate crystals. Tuber ingestion can produce more pronounced GI upset.
Time window
Onset of oral irritation is typically immediate to within a few hours of chewing, since calcium oxalate crystals act on contact. ASPCA does not publish a recovery window for cats; uncomplicated cases generally settle within 24 hours but exact timing is not well documented.
When to call the vet
Call your vet or ASPCA Animal Poison Control (888-426-4435) any time you see persistent drooling, repeated vomiting, swelling around the mouth, or refusal to eat — and call right away if you know the cat dug up and chewed a tuber.
Sources: ASPCA (no first-aid guidance).
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
Excessive drooling, vomiting, difficulty swallowing, and oral irritation.
Escalation note
The tubers are the most toxic part of the plant. If your cat has ingested any part of a begonia, please contact your veterinarian or a pet poison control center immediately.
Safer alternatives
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Source evidence
ASPCA Toxic Plant List
toxicology · 99% reliability
Begonia species contain soluble calcium oxalates that are toxic to dogs and cats.
Same cat verdict
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