Lily Ingestion and Feline Acute Renal Failure (Lilium and Hemerocallis Species — Easter, Tiger, Daylily, Asiatic — Unidentified Toxin, 100% Mortality Without Treatment) — pet safety profile

What is this product?

True lilies (genus Lilium) and daylilies (genus Hemerocallis) cause acute renal tubular necrosis in cats with mortality approaching 100% if treatment is not initiated within 18 hours of exposure. The toxic principle remains UNIDENTIFIED despite decades of investigation — multiple candidate fractions have been screened (steroidal glycoalkaloids, glycosaminoglycans) without definitive identification, which is why this product file references no specific compound hq_ids and the toxin(s) remain a Phase 56 SCI-14 enrichment candidate. ALL parts of the plant are toxic — petals, leaves, stamens, pollen, even the water from a vase containing lilies. As little as 2-3 leaves or one stamen ingestion causes acute renal tubular necrosis. ASPCA APCC ranks lily exposure in the top 10 feline plant-toxicity categories, with seasonal spikes around Easter (Lilium longiflorum, Easter lily) and Mother's Day (mixed-bouquet tiger and Asiatic lilies). Dogs are NOT affected by this specific renal toxicity (mild GI signs only) — the syndrome is feline-specific. Treatment requires aggressive intravenous fluid diuresis within 18 hours; delayed presentation yields anuric renal failure with mortality >90%. Prevention is absolute — keep all true lilies and daylilies out of cat households entirely; calla, peace, and peruvian lilies are botanically NOT in genus Lilium and do not cause this specific syndrome (though peace lily contains insoluble calcium oxalate crystals — a separate, milder oral irritation pattern).

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