PET SAFETY ANSWER · CITED TO ASPCA
Is Lily of the Valley safe for dogs?
Why it's toxic
Toxic principles: Cardiac glycosides and saponins
Clinical signs in dogs: Toxic only if large quantities eaten. Irregular and slow pulse, abdominal pain and diarrhea, low blood pressure, disorientation, coma, seizures
Severity rating: severe
Source
Classification per the ASPCA Toxic and Non-Toxic Plants database. Verified 2026-05-28. We update these answers when ASPCA changes the classification.