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Is dieffenbachia toxic to cats?

Also called: dumb cane, Charming Dieffenbachia, Giant Dumb Cane, Tropic Snow, Dumbcane, Exotica, Spotted Dumb Cane, Exotica Perfection

Toxic

Chewing it burns the mouth and causes drooling and vomiting.

Yes. Dieffenbachia (dumb cane) is toxic to cats. Chewing it releases crystals that burn the mouth, tongue and lips and cause heavy drooling and vomiting.

Signs to watch for

  • Mouth irritation and burning, heavy drooling, vomiting and difficulty swallowing.

Why it's dangerous

  • It contains insoluble calcium oxalate crystals.

Sources

  • Toxic and Non-toxic Plants: DieffenbachiaASPCA Animal Poison Control · Read 9 October 2026
    Toxicity: Toxic to Dogs, Toxic to Cats
    Clinical Signs: Oral irritation, intense burning and irritation of mouth , tongue and lips, excessive drooling, vomiting, difficulty swallowing
    Toxic Principles: Insoluble calcium oxalates, proteolytic enzyme
  • Poisonous PlantsInternational Cat Care · Read 9 October 2026
    Especially dangerous plants are Dieffenbachia (Dumb Cane) and lilies
  • List of Things Toxic to CatsPet Poison Helpline · Read 9 October 2026
    Other plants that are toxic to cats include cyclamen, Kalanchoe species, Dieffenbachia species, daffodils, and Lily of the Valley.
  • Plants That are Toxic to CatsVCA Animal Hospitals · Read 9 October 2026
    Other common insoluble calcium oxalate-containing houseplants include philodendrons, Pothos, and Dumb.
  • Cats and poisonsInternational Cat Care · Read 9 October 2026
    If you’re concerned your cat has come into contact with any of the substances listed, contact your veterinary team immediately

Information from ASPCA Animal Poison Control, International Cat Care, Pet Poison Helpline and VCA Animal HospitalsSources checked 9 October 2026

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