Poisonous Plants for Dogs and Cats: Oleander

What makes Oleanders toxic to dogs and cats?

Oleanders contain a cardiac glycoside called oleandrin. All parts of the plant are toxic and only small volumes need to be eaten by your dog or cat to cause illness.

There are reports of animals becoming gravely ill by ingesting a few leaves, by eating meat that was cooked on a skewer of oleander, or drinking water that had oleander leaves or flowers in it.

Clinical Symptoms of Oleander Poisoning

• Drooling aka hypersalivation
• Abdominal pain
• Diarrhea
• Colic
• Depression
• Death
• Weakness from low blood sugar
• Heart rate and rhythm abnormalities

What should I do if my pet ate Oleander?

Bring your pet to your veterinarian or nearest emergency clinic right away since this plant is so toxic. Your vet can give your dog or cat activated charcoal to help bind the toxins that are in the GI tract. Your pet will likely need to be on IV fluids to support their cardiovascular system and may need additional support to maintain their blood sugar levels. Your pet may also need medications to help with an abnormal heart rate or rhythm.

For more information and pictures of Oleander, check out these links:

ASPCA: Oleander

Pet Poison Helpline

Read more in our series of poisonous plants for your dog and cat:

Poisonous Plants for Dogs and Cats: Tulips

Poisonous Plants for Dogs and Cats: Philodendron

Poisonous Plants for Dogs and Cats: Sago Palm

Need to speak with a veterinarian regarding your pet’s poisoning or another condition?

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