Is Dieffenbachia Toxic to Dogs and Cats? (2026)
Dieffenbachia
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Quick facts
| Toxic to dogs | Yes |
|---|---|
| Toxic to cats | Yes |
| Toxic to horses | No |
| Toxic component | Insoluble calcium oxalate crystals |
| Onset of symptoms | Within minutes of chewing |
| Indoor / outdoor | indoor |
If your pet ate this plant
Both lines are staffed 24/7. A consultation fee applies to each. Do not wait for symptoms to appear before calling.
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Symptoms in dogs
- Oral pain
- Drooling
- Vomiting
- Difficulty swallowing
Symptoms in cats
- Oral pain
- Drooling
- Vomiting
- Pawing at mouth
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What to do
Offer water to help rinse remaining crystals from the mouth. Most cases resolve with supportive care at home; seek vet care if swelling of the mouth or throat develops.
Toxic component and mechanism
The toxic component in Dieffenbachia is insoluble calcium oxalate crystals.
What makes this plant different
Dieffenbachia's oxalate crystals are notably more concentrated than in milder Araceae relatives like Pothos, which is why ASPCA classifies its severity a step higher — the folk name 'Dumb Cane' specifically references the oral swelling and temporary speech difficulty it causes.
Plant identification
- Scientific name
- Dieffenbachia
- Family
- Araceae
- Also known as
- Dieffenbachia, Charming Dieffenbachia, Giant Dumb Cane, Dumbcane
- Typically found
- indoor
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Last verified: July 2, 2026 · Cross-referenced with ASPCA Animal Poison Control