Lilies and Cats: the exposure we wish people knew about

There are a few toxins in veterinary medicine that immediately change how we approach a case, and lilies are one of them.

Not because cats are constantly eating the plant but because they don’t have to.

Most people think toxicity means chewing on leaves or petals, but with lilies, the exposure can be much smaller and much easier to miss. We see cats who simply brushed against a plant, got pollen on their fur, and then ingested it while grooming. Others drink water from a vase or have a small amount of pollen on their nose or paws. That’s all it takes.

The difficult part is that many of these exposures happen in completely normal situations a bouquet brought into the home, flowers sent as a gift, or a seasonal arrangement. Most people have no idea lilies are dangerous to cats, so nothing about the situation feels risky at the time.

True lilies, such as Easter lilies, tiger lilies, Asiatic lilies, and daylilies, are extremely toxic to cats and primarily affect the kidneys. Once the toxin is absorbed, the progression can be fast.

When these patients come into the ER, the early signs can be subtle. Some cats may vomit, seem quieter than usual, or stop eating. Sometimes owners saw the exposure, but often they didn’t. Within about 24 to 72 hours, we can start to see kidney values rise, and this can progress to acute kidney failure if not treated.

One of the most important things to understand is that normal bloodwork at the time of presentation does not mean a patient is in the clear. We will run a full blood panel when they arrive to establish a baseline and evaluate overall health, but significant changes are often not visible until around the 24-hour mark. That baseline becomes critical because we repeat bloodwork during hospitalization to monitor for any changes as they develop.

If there is any concern for exposure, even if a cat appears completely normal, we take it seriously. Most of these patients are hospitalized and started on IV fluid therapy to help support and diurese the kidneys while the toxin is processed. Hospitalization typically lasts one to three days, depending on how the patient is doing and what we see on repeat labwork.

We will also gently bathe the patient, often with a rag bath, to remove any pollen that may still be on their fur. This is an important step because continued grooming can lead to ongoing exposure even after they’ve left the initial environment.

Timing plays a huge role in outcome with lily exposure. When we are able to start treatment early, sometimes even before symptoms develop, patients have a much better chance of recovery. Waiting until a cat appears visibly ill can significantly change the prognosis.

If there is even a possibility your cat came into contact with a lily, it is important to contact your veterinarian right away.

You can also reach out to a pet poison service for immediate guidance, such as the ASPCA Animal Poison Control at (888) 426-4435 or Pet Poison Helpline at (855) 764-7661.

The simplest takeaway is this: if you have cats in your home, it is safest to avoid lilies entirely.

We would always rather evaluate a patient early than try to treat kidney failure later.

— Bend Animal Emergency

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