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Is Peace Lily Toxic to Dogs? Signs and What to Do

PawAI Lab
7 min read

Learn whether the Peace Lily (Spathiphyllum) poses a risk to dogs, the insoluble calcium oxalate crystals responsible, and what steps a veterinarian may recommend after exposure.

Quick Answer

Yes, the Peace Lily (Spathiphyllum species) is potentially harmful to dogs. The plant contains insoluble calcium oxalate crystals, which are needle-shaped structures that can cause immediate pain and irritation when they penetrate the tissues of the mouth, tongue, and throat. Signs may include drooling, pawing at the face, and vomiting. Effects are usually mild to moderate, but severity can vary. If your dog has chewed or eaten a Peace Lily, contact a veterinarian or animal poison-control service for guidance, even if your dog appears well at this time.

Before using any tool, contact a veterinary professional if your dog may have eaten a Peace Lily.

  • US: ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661)
  • UK: Animal PoisonLine (01202 509000) or your nearest veterinary emergency clinic
  • Canada: ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661)
  • AU: Animal Emergency Centre or your regular vet
  • EU: Contact your nearest veterinary emergency service

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Safety Verdict

Potentially Harmful. Peace Lily (Spathiphyllum species) contains insoluble calcium oxalate crystals. These are tiny, needle-shaped structures known as raphides that are packed within specialized cells throughout the plant. When a dog chews or bites into the plant, the cell walls rupture and the crystals are forced outward, penetrating the soft tissues of the mouth, tongue, lips, and throat. This mechanical irritation causes immediate pain and triggers an inflammatory response.

The ASPCA lists Spathiphyllum as toxic to dogs and cats. Reactions are generally described as mild to moderate, and serious outcomes are uncommon. However, the discomfort can be significant, and in rare cases swelling in the throat may interfere with breathing. The degree of effect depends on how much plant material is chewed and how sensitive the individual dog is.

What Should the Owner Do Now?

  1. Contact a veterinarian or animal poison-control service for guidance. They can help assess whether the amount ingested warrants an examination.
  2. Do not induce vomiting unless a veterinarian or poison-control professional directly instructs you to do so. The irritant crystals can cause additional damage on the way back up.
  3. Rinse your dog's mouth with water if it is safe to do so and your dog is cooperative, to help remove lingering crystals and reduce irritation.
  4. Do not give food, milk, salt, oil, charcoal, or any home remedy. These are not proven treatments and may worsen the situation.
  5. Follow the veterinarian's instructions regarding monitoring at home or bringing your dog in for examination and supportive care.

Even if your dog has only chewed a small amount and seems fine, professional consultation can help confirm whether further steps are needed.

What Signs May Occur?

Signs of Peace Lily exposure in dogs usually appear immediately or within minutes of chewing, because the calcium oxalate crystals cause irritation on contact. Not all dogs will show every sign, and severity is usually mild to moderate.

Signs may include:

  • Immediate drooling or hypersalivation
  • Pawing at the mouth or face
  • Shaking the head
  • Redness or swelling of the lips, tongue, or mouth
  • Vocalization or whimpering due to oral pain
  • Vomiting
  • Reduced appetite or reluctance to eat

In rare cases involving larger ingestions or significant swelling, breathing difficulty may occur if the throat is affected. Absence of signs does not necessarily rule out irritation, particularly if only a small amount was chewed.

What Information Should Be Ready?

When you contact a veterinarian or poison-control service, having the following details available can help them assess the situation more efficiently:

  • Dog's details: species, breed, approximate age, and body weight
  • Plant involved: Peace Lily (Spathiphyllum), and which parts were chewed or eaten (leaves, stems, flowers)
  • Estimated amount: best guess of how much plant material was consumed
  • Time of exposure: when the chewing or ingestion occurred
  • Current symptoms: any drooling, pawing at the mouth, vomiting, or breathing changes
  • Plant sample: if available, a photo or physical sample to help confirm identification
  • Medical history: any pre-existing conditions or current medications

Provide honest estimates rather than precise numbers. The veterinary team can work with approximate information to determine the best course of action.

Differences That May Affect Risk

Several factors can influence how a dog is affected by Peace Lily, but none of them allow for a reliable prediction of outcome:

  • Amount ingested: Larger ingestions are generally associated with more pronounced signs, though even a single bite can cause oral irritation.
  • Body size: Smaller dogs may be relatively more affected by a given amount, but toxicity can occur across sizes.
  • Individual sensitivity: Some dogs may experience more swelling or discomfort than others.
  • Chewing versus swallowing: Chewing releases the crystals and causes oral irritation, while swallowing may lead to gastrointestinal signs.

Because of these variables, any known or suspected ingestion should be discussed with a veterinarian.

When to Contact a Veterinarian

Contact a veterinarian or animal poison-control service if your dog has chewed or eaten a Peace Lily, particularly if signs develop.

Emergency signs that require urgent veterinary attention include:

  • Difficulty breathing, wheezing, or choking
  • Significant swelling of the mouth, tongue, or throat
  • Persistent or repeated vomiting
  • Severe drooling that prevents the dog from drinking
  • Weakness or collapse

Non-urgent follow-up: If only a small amount was chewed and your dog appears normal with mild drooling, a veterinary consultation can still help confirm whether monitoring at home is appropriate.

FAQ

Are Peace Lilies toxic to dogs?

Yes, Peace Lilies (Spathiphyllum) are considered potentially harmful to dogs. They contain insoluble calcium oxalate crystals that can cause immediate oral pain, drooling, and vomiting when chewed. Effects are usually mild to moderate, but a veterinarian should assess any ingestion.

What happens if a dog chews a Peace Lily?

Chewing a Peace Lily releases needle-shaped calcium oxalate crystals that penetrate the tissues of the mouth, causing immediate pain, drooling, pawing at the face, and sometimes vomiting. A veterinarian should be contacted for guidance, even if signs appear mild.

What should I do if my dog ate part of a Peace Lily?

Rinse your dog's mouth with water if it is safe to do so, and contact a veterinarian or animal poison-control service for guidance. Do not induce vomiting or give home remedies unless a veterinarian instructs you to. Watch for drooling, swelling, or breathing difficulty.

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Disclaimer

This article and the PawAI Toxicity Checker provide general safety information and cannot determine an individual pet's toxicity risk or replace a veterinarian or animal poison-control service. If exposure may have occurred, contact an appropriate professional promptly, even if your pet appears well.

Written by PawAI Lab