VeterUSA · Emergency triage
Did your cat get into a lily?
Not every plant called a "lily" is the same — some are deadly to cats and some only cause mild irritation. Tell us which one and get an instant risk level and what to do now.
For true lilies, there is no safe amount. Even a nibbled petal, pollen licked off the fur, or a sip of vase water can cause fatal kidney failure in a cat. If it was a true lily, treat it as an emergency now.
Both helplines are staffed 24/7 by veterinary toxicologists and can identify a plant from a photo. A consultation fee may apply. If your cat is vomiting, hiding, drinking or urinating more, or seems unwell, go to the nearest ER now.
Which lilies are dangerous to cats?
The word "lily" is used for many unrelated plants, and they're not equally dangerous. The ones that kill cats are the true lilies — genus Lilium (Easter, Asiatic, tiger, stargazer, Oriental) — and daylilies, genus Hemerocallis. These cause sudden, severe kidney failure, and there is no safe dose: eating a small piece of petal or leaf, licking pollen off the fur, or drinking water from the vase can all be fatal.
| Plant | Risk to cats |
|---|---|
| True lily (Lilium) & Daylily (Hemerocallis) | Deadly — acute kidney failure. Any exposure is an emergency. |
| Lily of the valley (Convallaria) | Dangerous — affects the heart (not kidneys). Emergency. |
| Peace lily, Calla lily, Peruvian lily | Not true lilies — mouth/stomach irritation, rarely life-threatening. |
Why true lilies are so dangerous
The toxin in true lilies and daylilies targets the cells of the kidneys. Cats often seem fine at first, then develop vomiting, lethargy, and loss of appetite, with kidney failure setting in over 24 to 72 hours. Because the early phase can look mild, waiting is the biggest risk — treatment (IV fluids to protect the kidneys) works best when started within the first 18 hours.
What counts as exposure?
All parts are toxic: petals, leaves, stems, the pollen, and even the water in a vase that held lilies. A cat that brushes against the flowers and then grooms pollen off its coat has been exposed. If you keep cats, the safest choice is to keep true lilies out of the home entirely.
Is this checker a substitute for a vet?
No. It helps you tell a deadly true lily from a harmless look-alike and decide how urgently to act. When the plant is a true lily — or you're not sure — call a veterinarian or an animal poison control line right away rather than wait.