Dogs
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources

Spathiphyllum
The Mauna Loa Peace Lily is a popular indoor plant known for its elegant white spathes and lush foliage. It contains insoluble calcium oxalate crystals that can cause irritation upon contact or ingestion.
Safety status
Dogs
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources
Peace lily is not a true lily, and it doesn't carry the kidney-failure risk dogs face from sago palm or grapes. What it does carry is a load of insoluble calcium oxalate crystals — microscopic needles that punch into a dog's lips, gums, and tongue the instant she bites a leaf. The pain and drool are dramatic, but most dogs recover fully with supportive care once the crystals are flushed out.
Sudden pawing at the muzzle, head shaking, and intense drooling within minutes of chewing. Common follow-on signs: vomiting (often bringing up leaf material), reluctance to eat, and visible discomfort around the mouth. Less common but more serious: noticeable swelling of the lips, tongue, or throat, or any change in breathing.
Onset is fast — minutes to a couple of hours. With basic supportive care, signs typically resolve within 1–3 days.
Call your vet or Pet Poison Helpline (855-764-7661) for persistent drooling, repeated vomiting, refusal to drink, or any swelling of the mouth. Treat any difficulty breathing, loud or labored swallowing, or collapse as an emergency and go directly to a clinic.
Pull any remaining plant material out of your dog's mouth and rinse the mouth with clean, cool water to flush out the crystals. Do NOT induce vomiting — bringing the oxalate material back up causes additional burning to the esophagus and mouth. Then call your vet or Pet Poison Helpline for guidance.
Sources: ASPCA, Pet Poison Helpline.
If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.
Dogs — concern notes
Common signs
Oral irritation, intense burning and irritation of the mouth, tongue and lips, excessive drooling, vomiting, and difficulty swallowing.
Escalation note
The insoluble calcium oxalate crystals cause immediate mechanical irritation. If your dog shows signs of distress or has ingested the plant, please contact your veterinarian for professional guidance.
Safer alternatives
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ASPCA Toxic Plant List
toxicology · 99% reliability
Peace Lily contains insoluble calcium oxalate crystals that cause oral irritation.
NC State Extension Plant Toolbox
botanical · 94% reliability
Spathiphyllum is a genus of monocotyledonous herbaceous perennial plants in the family Araceae, native to tropical regions of the Americas and southeastern Asia.
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