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Peace Lily
Spathiphyllum spp. or Spathiphyllum wallisii
Peace Lily (Spathiphyllum spp.) is a common indoor plant toxic to cats. Despite the misleading name, it is not a true lily and does not cause the acute kidney failure associated with Lilium species. As a member of the Araceae family, it contains insoluble calcium oxalate crystals (raphides) that cause immediate oral and GI irritation when the plant is chewed.
Important Notes
Toxic compounds: insoluble calcium oxalate raphides throughout leaves, stems, and flowers
Mechanism: crystals penetrate the oral mucosa mechanically, causing burning, swelling, and inflammation
Symptoms: intense drooling, pawing at mouth, oral pain, difficulty swallowing, vomiting
No kidney failure risk — Peace Lily is NOT a true lily; the name is misleading but the toxicity is different and milder
Rinse the mouth with water; seek vet care if throat swelling impairs swallowing or breathing
Potentially Toxic Parts
Leaf
Possible Symptoms Reported in Cats
Difficulty breathing (dyspnea)
Respiratory · Immediate to shortly after exposure, as swelling progresses.
Intense burning, pain, irritation, erythema (redness), and pawing at the mouth
Gastrointestinal · Immediate.
Hypersalivation (excessive drooling) and difficulty swallowing (dysphagia)
Gastrointestinal · Immediate.
Vomiting, stomach upset, and occasionally diarrhea
Gastrointestinal · Immediate to shortly after ingestion.
Lethargy and anorexia (refusal to eat)
Neurological · Shortly after ingestion.
Disclaimer: This summary was compiled from multiple sources and is for informational use only. It is not a diagnosis or treatment plan. Toxicity can vary based on the substance, amount, plant part, and individual cat. If you think your cat may have been exposed to a toxic substance, contact a veterinarian right away.