§ Toxic plants · Liliaceae · Checked Oct 2026
Is western lily toxic to cats?
Yes. Western lily (Lilium occidentale) is toxic to cats, according to the ASPCA Animal Poison Control Center. Plant Smart rates its effects Severe, level 3 of 4.
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§ 010 · Signs
What to watch for
Signs include kidney failure, vomiting, drooling, dullness or depression, peeing more than usual, weakness and lying down and unable to get up. Signs can start within hours; some take a day or more to show.
§ 020 · If it happened
What to do if your pet ate it
Call your vet or a pet poison hotline straight away, even if your pet seems fine: the ASPCA Animal Poison Control Center, (888) 426-4435, or Pet Poison Helpline, (855) 764-7661. Both are open 24 hours and charge a fee. Have the plant or a photo of it to hand, and don’t make your pet vomit unless a vet tells you to.
§ 030 · Same family
Other Liliaceae plants toxic to pets
Western lily belongs to the Liliaceae family. ASPCA lists these relatives too.
§ 040 · Questions
Questions about western lily and pets
Is western lily toxic to cats?
Yes. ASPCA lists western lily as toxic to cats.
Is western lily toxic to dogs?
ASPCA's list does not name western lily as toxic to dogs. That is not the same as safe: call a vet if your dog eats it and seems unwell.
What happens if my pet eats western lily?
Signs include kidney failure, vomiting, drooling, dullness or depression, peeing more than usual, weakness and lying down and unable to get up. Plant Smart rates it Severe, level 3 of 4.
What should I do if my pet ate it?
Call your vet or a pet poison hotline right away, even before signs appear: the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661. Both charge a fee. Have the plant, or a photo of it, to hand.