Why Peace Lilies Are Toxic to Pets
The peace lily (Spathiphyllum species) is one of the most popular houseplants in homes worldwide, but it is considered toxic to dogs and cats.
The plant contains insoluble calcium oxalate crystals (raphides) stored in specialized cells throughout the foliage and stems.
When a pet chews or bites the leaves, these microscopic needle-like crystals are released into the mouth and throat, embedding in soft tissues and causing immediate burning pain and irritation.
While rarely life-threatening, the reaction can be severe and alarming, often prompting owners to seek emergency veterinary care.
Why speed matters
Delaying care significantly worsens outcomes. Some signs appear hours or days later, so "looks fine right now" is not a reason to wait.
Signs to watch for
- Intense drooling and excessive salivation
- Pawing at the mouth and face rubbing
- Oral pain with reluctance to eat or drink
- Swelling of the lips, tongue, and inner mouth
- Vomiting after chewing the plant
- Difficulty swallowing in severe cases
What to do right now
- Call your veterinarian or a pet poison control center right away for advice.
- Gently rinse your pet's mouth with cool water to help remove residual plant material.
- Offer a small amount of ice or cold water to soothe oral discomfort.
- Do NOT induce vomiting unless explicitly directed by a veterinary professional.
- Bring a sample or photo of the plant to help your vet confirm the species and guide treatment.
The step-by-step response, from the first minute to the vet visit, is in our Peace Lily Plant Poisoning in Dogs and Cats emergency guide.