Yellow oleander (Cascabela thevetia) is poisonous to dogs and cats. The toxin in this plant is peruvoside, cardenolides, and thevetins that is found in the seeds of the plant. It is possible that the entire plant is toxic. For an adult human, 10 seeds are necessary to kill. Clinical effects include vomiting, diarrhea, bradycardia, arrhythmias, and cardiac arrest. Ingested oleander seeds should never be chewed on or given to puppies as a treat. If you think you have accidentally given your pet yellow oleander or similar seeds, contact your veterinarian or the Pet Poison Helpline immediately.
What is Yellow oleander?
Yellow oleander (Cascabela thevetia) is a poisonous vine that is found primarily in the southwest region of the United States. The plant contains a toxin known as oleandrin, which is a sesquiterpene lactone alkaloid. This toxin affects the neuromuscular junction and can cause the following symptoms: cardiac abnormalities that can lead to sudden death, cardiac arrythmia, and cardiac collapse. It can be fatal if the right dosage is not calculated by a veterinarian.