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Philodendron

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Poisonous to: Cats, Dogs

Level of toxicity: Generally mild to moderate

Common signs to watch for:

  • Drooling
  • Oral pain
  • Pawing at the mouth
  • Vomiting
  • Inappetance

The Philodendron species contain insoluble crystals of calcium oxalate called raphites. Chewing or biting into the plant releases the crystals which penetrate tissue resulting in injury. When dogs or cats ingest insoluble calcium oxalate-containing plants, clinical signs may be seen immediately and include pawing at face (secondary to oral pain), drooling, foaming, and vomiting. Moderate to severe swelling of the lips, tongue, oral cavity, and upper airway may also be seen, making it difficult to breathe or swallow.

Poison type: Plants

Alternate names: Dumbcane, Dieffenbachia, insoluble oxalates, insoluble calcium oxalates