The bulbs, stems and leaves contain phenanthridine alkaloids that are poisonous to pets that ingest them. Bulbs are particularly toxic. Signs of poisoning include drooling, vomiting, diarrhea, seizures, abdominal pain and a drop in blood pressure and heart rate. If you believe your dog or cat has eaten snowdrop bulbs or plants, seek veterinary help immediately.Galanthus woronowii.