Oleander is a plant that is poisonous to dogs and cats. It can contain a cardiac glycoside called oleandrin, which causes bradycardia, an abnormally slow heart rate, and cardiac arrhythmias in a healthy dog or cat. If your pet has ingested oleander, please seek veterinary care immediately.
What is Oleander?
Oleander is a genus of shrubs and small trees in the family Apocynaceae. Most species of this genus have heart-shaped leaves and clusters of white fragrant flowers and seeds. There are numerous species in the genus. One member, Nerium oleander, is native to the Levant as well as the Mediterranean region.