Cyclamen tubers contain irritant saponins; ingestion of the tuber can be life-threatening.
Leaves and flowers cause mainly GI upset; the underground tuber is the dangerous part.
Cyclamen contains terpenoid saponins (cyclamin), most concentrated in the tuberous roots. These cause severe gastrointestinal irritation and, in large doses, abnormal heart rhythms, seizures and death.
Sources
Eating a few leaves typically causes vomiting; tuber ingestion is an emergency.
Contact your veterinarian or an emergency animal poison hotline immediately. Do not induce vomiting unless instructed by a vet.
callFind Emergency Vet