TL;DR: Dieffenbachia ingestion causes immediate oral pain and swelling in dogs; while rarely fatal, you should contact a vet promptly to manage pain and monitor for breathing difficulties.
What is Dieffenbachia and how does it affect my dog?
Dieffenbachia, commonly known as 'Dumb Cane,' is a popular indoor plant containing insoluble calcium oxalate crystals. When a dog chews on its leaves, these needle-like crystals are forcefully ejected into the oral tissues, leading to intense burning, swelling, and discomfort.
How urgent is it if my dog eats a Dieffenbachia plant?
- While ingestion is rarely life-threatening, it is considered a medium-urgency situation.
- The primary concern is localized swelling of the mouth and throat, which can occasionally interfere with breathing.
- Prompt veterinary consultation is necessary to manage pain and ensure the airway remains clear.
Why should I take a photo of the plant and my dog's mouth for the vet?
- Take a clear photo of the plant and the specific leaf your dog chewed to help the veterinarian confirm the species.
- Show the photo to the triage team so they can assess the volume of plant material consumed.
- Provide a photo of your dog’s mouth to help the vet determine the severity of the inflammatory response during a remote assessment.
Clinical Context (Merck Veterinary Manual)
Dieffenbachia species contain calcium oxalate crystals, saponins, and acrid volatile oils which, upon ingestion, cause dermal and oral mucosal irritation and edema. Clinical signs include immediate intense pain, burning, and inflammation of the mouth and throat, anorexia, vomiting, possible diarrhea, tongue extension, head shaking, excessive salivation, and dyspnea. Treatment is symptomatic and supportive, including analgesics or demulcents for oral irritation, assessment of hydration and electrolyte status, and electrolyte replacement therapy if indicated. Systemic reactions to insoluble calcium oxalate are not typically reported.
Chapter: Toxicology
Source: The Merck Veterinary Manual, 11th Edition (Page 3105)