Is Dieffenbachia toxic to dogs?

Moderate severity No safe amount — No amount is considered safe.

Yes, Dieffenbachia is toxic to dogs. It can cause real illness, so contact your vet if your pet has been exposed. No amount is considered safe.

Symptoms to watch for

Drooling
Pawing at the mouth
Oral pain
Decreased appetite
Vomiting
Swelling of the upper airway
Difficulty breathing

How vets treat it

Rinse the mouth with water or milk to remove crystals; seek veterinary care if swelling occurs or if symptoms persist.

Why it's dangerous

Chewing or biting the plant releases needle-like crystals that penetrate oral tissues and the gastrointestinal tract, causing immediate irritation and potential swelling.

Toxic compound: Insoluble calcium oxalate crystals

Good to know

Very rarely, swelling of the upper airway occurs making it difficult to breathe. Part of the Araceae family.

Sources

Pet Poison Helpline

This page is informational and is not veterinary advice. If your pet has been exposed to something risky, contact your vet or an animal poison control line right away.

The StrawPaw Team · How we prepare our guides

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