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Lily Poisoning in Dogs: Types, Signs, Treatment, and Prognosis

PawAI Lab
9 min read

Understand the different types of lilies that may affect dogs, the toxic principles involved, the clinical signs that may develop, how veterinarians approach treatment, and how lily toxicity in dogs differs from the severe danger lilies pose to cats.

Quick Answer

Lily poisoning in dogs depends on the species of lily involved. True lilies (Lilium) and daylilies (Hemerocallis) contain an unknown nephrotoxin that may cause gastrointestinal upset and, in some cases, kidney effects in dogs, though the effects are generally less severe than in cats. Peace lilies and Calla lilies contain calcium oxalate crystals that cause oral irritation and digestive upset. With prompt veterinary care, the prognosis for dogs is generally favorable, but any ingestion should be discussed with a veterinarian or animal poison-control service without delay.

Before using any tool, contact a veterinary professional if your dog may have chewed on or eaten a 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. The word "lily" is used for several unrelated plant species, and the toxic principles and resulting effects differ significantly. True lilies (genus Lilium, including Easter lilies, Tiger lilies, Asiatic lilies, and Oriental lilies) and daylilies (Hemerocallis) are extremely dangerous to cats, where they can cause acute kidney failure. In dogs, ingestion may cause gastrointestinal upset and, in some cases, kidney-related effects, though severe kidney failure appears to be less common than in cats.

Other plants commonly called lilies affect dogs through different mechanisms:

  • Peace lily (Spathiphyllum) and Calla lily (Zantedeschia): These contain insoluble calcium oxalate crystals. When chewed, these crystals can cause immediate oral irritation, drooling, and gastrointestinal upset.
  • Peruvian lily (Alstroemeria): May cause mild gastrointestinal upset. It is generally considered less toxic than true lilies but can still produce digestive signs.

Because the exact species is sometimes difficult to identify and different lilies carry different risks, any ingestion should be assessed by a veterinarian.

Important note: Lilies are far more dangerous to cats than to dogs. Even minimal exposure to true lilies (Lilium and Hemerocallis), including pollen groomed from fur, can cause life-threatening kidney failure in cats. Safety conclusions for dogs must never be transferred to cats.

What Should the Owner Do Now?

  1. Contact a veterinarian or animal poison-control service immediately. Have the details of the plant and how much was eaten ready so the team can assess the level of concern.
  2. Do not induce vomiting unless a veterinarian or poison-control professional directly instructs you to do so.
  3. Remove any remaining plant material from your dog's reach to prevent further ingestion.
  4. Do not give food, milk, salt, oil, charcoal, or any home remedy. These are not proven treatments for lily exposure.
  5. Try to identify the plant. If possible, take a photo or bring a sample of the plant to help the veterinary team determine the species and appropriate response.
  6. Follow the veterinarian's instructions regarding whether an examination, monitoring, blood work, or supportive care is needed.

What Signs May Occur?

The signs that may occur depend on the type of lily involved. Not all dogs will show every sign, and the absence of early signs does not necessarily rule out risk.

For plants containing calcium oxalate crystals (Peace lily, Calla lily), signs may include:

  • Oral irritation or a burning sensation in the mouth
  • Drooling or excessive salivation
  • Pawing at the mouth
  • Vomiting
  • Difficulty swallowing
  • Reduced appetite

For true lilies (Lilium) and daylilies (Hemerocallis), signs in dogs may include:

  • Vomiting
  • Diarrhea
  • Reduced appetite
  • Lethargy or depression
  • Changes in drinking and urination, which may indicate kidney effects

If your dog shows changes in urination, drinking, or energy levels after exposure to a true lily, treat the situation as urgent and seek veterinary care promptly. Kidney-related signs can progress, and early intervention may improve outcomes.

How Lily Toxicity Differs From Cats

The most important distinction in lily poisoning is the difference between dogs and cats. True lilies (Lilium) and daylilies (Hemerocallis) contain a nephrotoxic (kidney-damaging) principle that has not been conclusively identified. In cats, this toxin can cause rapid and severe acute kidney failure, even from very small exposures, including ingestion of pollen or licking water from a lily vase.

In dogs, the same plants may cause gastrointestinal upset and, in some cases, kidney-related effects, but the severe and rapid kidney failure seen in cats is less consistently documented in dogs. This does not mean lilies are safe for dogs; rather, the risk profile differs, and kidney effects remain a possibility that warrants veterinary attention.

Plants such as Peace lilies and Calla lilies, which contain calcium oxalate crystals, affect both dogs and cats similarly by causing oral irritation and digestive upset, rather than kidney damage.

Because of these species differences, any household with cats should exercise extreme caution with lilies, and safety conclusions should never be transferred between species.

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: the common name and, if known, the botanical name (e.g., Lilium, Hemerocallis, Spathiphyllum, Zantedeschia, Alstroemeria)
  • Part of plant consumed: leaves, flowers, stem, pollen, or roots
  • Estimated amount: best guess of how much plant material was ingested
  • Time of ingestion: when the exposure occurred, or the window of time during which it may have happened
  • Current symptoms: any drooling, vomiting, diarrhea, oral irritation, lethargy, or changes in drinking and urination
  • Photograph or sample: if available, a photo or physical sample of the plant for identification
  • Medical history: any pre-existing kidney disease, current medications, or other health conditions
  • Other pets in the home: whether cats are also present, given the heightened danger to them

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

Treatment and Prognosis

Treatment for lily poisoning in dogs depends on the type of lily and the severity of signs. Approaches directed by a veterinarian may include:

  • Decontamination: If ingestion was recent and a veterinarian determines it is appropriate, decontamination measures may be considered. This should only be performed under professional guidance.
  • Gastrointestinal support: For dogs with vomiting or diarrhea, medications and supportive care may help manage digestive signs.
  • Oral care: For calcium oxalate crystal exposure, rinsing the mouth and providing supportive care for oral irritation may be recommended by a veterinarian.
  • Intravenous fluids: For true lily (Lilium) exposure, fluid therapy may be used to support kidney function and promote elimination of toxins, particularly if kidney effects are a concern.
  • Blood work and monitoring: If a true lily was ingested, blood tests to assess kidney function may be recommended, along with monitoring of urine output.

Prognosis is generally favorable for dogs with prompt veterinary care, particularly when the plant involved is a Peace lily, Calla lily, or Peruvian lily, where effects are typically limited to oral and gastrointestinal irritation. For true lily (Lilium) exposure, the prognosis depends on the amount ingested, the time to treatment, and whether kidney effects develop. Early intervention is associated with better outcomes.

Owners should not attempt to treat lily poisoning at home, as inappropriate interventions can worsen the situation, particularly when kidney effects are possible.

When to Contact a Veterinarian

Contact a veterinarian or animal poison-control service if your dog has chewed on or ingested any part of a lily.

Emergency signs that require urgent veterinary attention include:

  • Persistent vomiting or diarrhea
  • Oral irritation, drooling, or pawing at the mouth
  • Lethargy, weakness, or collapse
  • Changes in drinking or urine output
  • Difficulty swallowing or breathing changes

Non-urgent follow-up: If a small amount was eaten and your dog appears normal, professional guidance is still recommended, particularly if the plant was a true lily (Lilium or Hemerocallis), where kidney monitoring may be advisable.

FAQ

Are true lilies as dangerous to dogs as they are to cats?

No. True lilies (Lilium) and daylilies (Hemerocallis) can cause life-threatening kidney failure in cats, even from very small exposures. In dogs, the effects are typically milder, but gastrointestinal upset and possible kidney effects can still occur. Any ingestion by either species should be discussed with a veterinarian.

What is the toxic principle in true lilies?

The specific nephrotoxic (kidney-damaging) principle in true lilies (Lilium) and daylilies (Hemerocallis) has not been conclusively identified. It is known to cause severe kidney damage in cats. In dogs, the effects are less consistently severe, but kidney monitoring is still recommended after ingestion.

What is the prognosis for lily poisoning in dogs?

The prognosis is generally favorable with prompt veterinary care. For Peace lilies and Calla lilies, effects are usually limited to oral and gastrointestinal irritation. For true lilies (Lilium), the prognosis depends on the amount ingested and how quickly treatment begins, with early intervention associated with better outcomes.

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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.