Anuric cat after lily ingestion: prognosis and options
2-year-old domestic shorthair cat that nibbled the flowers of a bouquet of lilies (Lilium) 3 days ago. After 12 hours of intravenous fluids with a urinary catheter it produces no urine; creatinine 11.2 mg/dL.
Which statement is correct?
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A. The prognosis is good: increasing the fluids until urine output returns is enough
Fluids are very effective in the first hours after ingestion, before the injury develops. With established anuria, more volume only leads to overload, to which cats are especially sensitive.
B. With established anuria the prognosis without dialysis is very poor; dialysis buys time for the tubules to recover
Correct. The toxin causes tubular necrosis, but the basement membrane is usually preserved and the tubules can regenerate over weeks. Without dialysis (haemodialysis or peritoneal), the anuric cat dies before that happens.
C. Only the pollen is toxic: if the cat ate petals or leaves, another cause should be sought
All parts of the plant, including the vase water, are nephrotoxic to cats, and very small amounts are enough.
D. If urine output returns, the cat can be discharged: the polyuric phase does not need intravenous fluids
Recovery usually goes through a polyuric phase with substantial water and potassium losses. Without fluids matched to those losses, the cat becomes dehydrated and the kidney injury may worsen.
lightbulb Key takeaway
In cats exposed to Lilium or Hemerocallis, intravenous fluid therapy started early (ideally within 18 hours) usually prevents kidney injury. The cat that arrives late and anuric only has a real chance with dialysis; dogs do not develop this nephrotoxicity.
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Updated: October 31, 2026 · Educational content for veterinary professionals. It does not replace current clinical guidelines or the judgement of the attending veterinarian.