Quick Veterinary Answer: Yes, True Lilies (Lilium) and Daylilies (Hemerocallis) are deadly poisonous to cats. Every part of the plant—including petals, leaves, stems, pollen, and even water from the flower vase—causes fatal kidney failure in cats within 36 to 72 hours.
Key Toxicity Facts
| Target Animals: | Cats |
| Toxic Principle: | Unidentified water-soluble nephrotoxin causing acute renal necrosis |
| Dangerous Dosage: | Less than 1 leaf, a pinch of pollen groomed off fur, or drinking vase water. |
| Clinical Severity: | Critically Fatal / Acute Renal Failure |
Symptoms of Ingestion
- Vomiting within 1 to 3 hours of exposure
- Severe lethargy, hiding, and depression
- Loss of appetite and excessive thirst followed by complete inability to urinate
- Disorientation, stumbling, and seizures
- Kidney failure and death within 3 to 7 days without immediate IV therapy
Emergency First-Aid Protocol
- CRITICAL EMERGENCY: Take your cat to a 24/7 emergency veterinary hospital IMMEDIATELY.
- If pollen is on their fur, wash it off immediately with mild cat soap so they do not groom and ingest it.
- Veterinary fluid diuresis must begin within 18 hours of ingestion to save the cat’s kidneys.
📞 24/7 Hotlines: ASPCA Animal Poison Control (888-426-4435) | Pet Poison Helpline (855-764-7661)
Frequently Asked Questions
Can a cat survive lily poisoning?
Yes, but ONLY if aggressive intravenous fluid therapy is started within 18 hours of exposure before permanent kidney damage occurs.
Which lilies are safe for cats?
Peace Lilies and Calla Lilies are not true lilies—they contain oxalates causing mouth irritation but do not cause kidney failure. However, no lily variety is truly pet-friendly.