Pet safety answer · Cited to ASPCA
Is Oleander safe for dogs?
Why it's toxic
Toxic principles: Cardiac glycosides
Clinical signs in dogs: Drooling, abdominal pain, diarrhea, colic, depression, death
Severity rating: life-threatening
Source
Classification per the ASPCA Toxic and Non-Toxic Plants database entry for Oleander. Verified 2026-10-01. We update these answers when the source changes the classification.