Short answer: Most true lilies (Lilium and Hemerocallis species) are far less dangerous to dogs than to cats – dogs typically get only mild GI upset. However, lily-of-the-valley (Convallaria majalis) is highly toxic to dogs and can cause life-threatening cardiac arrhythmias.
What you should actually do
- True lilies (Easter, tiger, day, Asiatic, Oriental): mild GI signs in dogs – vomiting, drooling – but not the acute kidney failure seen in cats.
- Lily-of-the-valley contains cardiac glycosides (convallarin, convallatoxin) similar to digitalis – causes vomiting, slow heart rate, arrhythmias, seizures.
- Peace lily and calla lily (Araceae, not true lilies) contain insoluble calcium oxalate crystals – cause mouth pain, drooling, swelling.
- Lily-of-the-valley toxicity is a true cardiac emergency: ECG, atropine, supportive care needed.
- Bulbs are usually the most toxic part of any lily.
The famous ‘lily kills cats’ warning is real but specific – it applies to true lilies (Lilium and Hemerocallis) which cause acute tubular necrosis and kidney failure in cats from just nibbling on petals or pollen. Dogs lack the same metabolic pathway and clear the toxin without renal damage.
Lily-of-the-valley is a different problem entirely – it’s not a true lily but a Convallaria, and its cardiac glycosides act like a digitalis overdose. Even small amounts can cause bradycardia and arrhythmias. If you have it in your garden and a curious dog, fence it off or remove it.
Dig deeper
⚕️ Medical Disclaimer
The information on this page is intended for educational purposes only and does not replace a hands-on veterinary examination. Drug doses depend on your dog’s complete clinical picture, concurrent medications, and the exact product formulation. Always confirm dosing with your veterinarian before administering any medication, and contact a 24-hour veterinary emergency service or animal poison control immediately if you suspect a medication overdose or adverse reaction. Editorial standards: every drug dose published on PuppaDogs is cross-checked against multiple authoritative veterinary references and reviewed by PuppaDogs Veterinary Editorial Team before publication.
