It's Saturday evening. You had an Easter lily in a vase on the table. Your 3-year-old DSH, Whiskers, knocked it over. You found chewed leaves on the floor and a few petals. She vomited twice. You're not sure if she ate any of it—but you know lilies might be bad for cats. What do you do?
Warning: ALL true lilies (Lilium, Hemerocallis) are nephrotoxic to cats. Every part—leaves, stems, flowers, pollen, vase water—is toxic. Ingestion of as little as one or two leaves can be fatal. Seek emergency care immediately. The 48-hour IV fluid window is critical.
True lilies (genus Lilium—Easter lily, tiger lily, Asiatic lily, daylily, etc.) contain a toxin that causes acute kidney injury in cats. All parts are toxic: leaves, stems, flowers, pollen, and even the water in the vase. Ingestion of as little as one or two leaves or petals can be fatal. The toxin causes severe necrosis of the renal tubular epithelium. Onset of renal failure can occur within 24-72 hours. There is no antidote. Aggressive IV fluid diuresis within 48 hours of ingestion is the only effective treatment—it may prevent or mitigate renal damage by flushing the toxin.
The Toxic Plant Scanner identified the plant from your photo: Lilium species — nephrotoxic to cats. Seek emergency care immediately.
| Time | What Happens |
|---|---|
| 0-12 hours | Vomiting, lethargy, anorexia. May seem mild. |
| 12-24 hours | Renal tubular damage begins. Creatinine may still be normal. |
| 24-72 hours | Acute kidney injury develops. Oliguria, azotemia, death if untreated. |
The Toxicology Specialist emphasizes: The 48-hour window for IV fluid diuresis is critical. Do not wait for kidney values to rise—by then it may be too late.
Treatment involves hospitalization with IV fluids at 2-3x maintenance rates (or higher) to promote diuresis and flush the toxin. The Fluid Therapy Calculator helps determine appropriate rates. Fluids are typically continued for 48-72 hours. Serial monitoring of creatinine, BUN, and urine output guides therapy. If oliguric or anuric renal failure develops, prognosis is guarded.
With early, aggressive treatment, many cats survive. Without treatment, mortality is high. Peace lilies (Spathiphyllum) and calla lilies (Zantedeschia) are NOT true lilies—they contain calcium oxalate crystals and cause oral irritation but not renal failure. Lily of the valley (Convallaria) causes cardiac glycoside toxicity, not renal. Only Lilium and Hemerocallis (daylily) cause this specific nephrotoxicity in cats.
Use the Toxic Plant Scanner to identify plants from photos. The Toxicology Specialist and Fluid Therapy Calculator support emergency triage and treatment planning.
- ALL true lilies (Lilium, Hemerocallis) are nephrotoxic to cats—every part, including pollen and vase water.
- Assume ingestion if there's any possibility. Do not wait for signs.
- 48-hour IV fluid window is critical. Seek emergency care immediately.
- Use Toxic Plant Scanner to identify plants—know what you have in your home.
- Peace lilies and calla lilies are different—irritating but not nephrotoxic. True lilies are the danger.