What should I do if my cat ate Yellow Oleander?

Remove any remaining plant material from your cat's mouth and surroundings and bring a sample (or a clear photo) to the clinic for identification. Do not induce vomiting and do not give activated charcoal at home — call ASPCA APCC (888-426-4435) or Pet Poison Helpline (855-764-7661) and follow their instructions while you transport your cat. Call immediately. Any suspected ingestion of yellow oleander by a cat is a same-hour emergency — drive to a vet or emergency clinic and call the ASPCA APCC (888-426-4435) or Pet Poison Helpline (855-764-7661) on the way. Do not wait for symptoms to appear.

What should I do if my dog ate Yellow Oleander?

Take any plant material (or a clear photo) with you to the clinic to confirm identification. Do not induce vomiting at home and do not give activated charcoal without veterinary instruction — call ASPCA APCC (888-426-4435) or Pet Poison Helpline (855-764-7661) and follow their guidance while you transport your dog. Call immediately — any ingestion is an emergency. Get to an ER vet right now and phone the ASPCA APCC (888-426-4435) or Pet Poison Helpline (855-764-7661) en route. Do not wait for cardiac symptoms; once arrhythmias appear, the window for intervention narrows quickly.

Yellow Oleander — (c) Ricard Busquets Reverte, some rights reserved (CC BY), uploaded by Ricard Busquets Reverte — Photo by (c) Ricard Busquets Reverte, some rights reserved (CC BY), uploaded by Ricard Busquets ReverteiNaturalistCC BY

Photo by (c) Ricard Busquets Reverte, some rights reserved (CC BY), uploaded by Ricard Busquets ReverteiNaturalistCC BY

Pet safety reference

Yellow Oleander

Q: Is Yellow Oleander safe for cats?

Yellow Oleander is potentially toxic to cats. This plant is considered highly toxic. Ingestion of even small amounts can lead to severe cardiac distress. Please contact your veterinarian or an animal poison control center immediately if ingestion is suspected.

Q: Is Yellow Oleander safe for dogs?

Yellow Oleander is potentially toxic to dogs. The cardiac glycosides in this plant can cause life-threatening heart rhythm abnormalities. Immediate veterinary intervention is required if your dog has chewed or swallowed any part of this plant.

Thevetia peruviana

Yellow Oleander is a highly toxic evergreen shrub known for its bright, trumpet-shaped yellow flowers and narrow, leathery leaves. All parts of this plant contain potent cardiac glycosides that are dangerous if ingested by pets.

Check a list

Be-still TreeCascabela thevetiaLucky NutThevetia peruvianaYellow Oleander

Light: Full sun to partial shade
Habit: Evergreen shrub or small tree
Care: Moderate

Safety status

Cats & Dogs

Potentially toxic

Consulted references classify the plant as toxic or irritating for that pet type.

Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.

Sources

ASPCA Toxic Plant List

If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.

Cats — concern notes

Common signs

Drooling, vomiting, diarrhea, abnormal heart rate, tremors, and potential collapse.

Escalation note

This plant is considered highly toxic. Ingestion of even small amounts can lead to severe cardiac distress. Please contact your veterinarian or an animal poison control center immediately if ingestion is suspected.

Dogs — concern notes

Common signs

Vomiting, abdominal pain, lethargy, irregular heartbeat, and weakness.

Escalation note

The cardiac glycosides in this plant can cause life-threatening heart rhythm abnormalities. Immediate veterinary intervention is required if your dog has chewed or swallowed any part of this plant.

Safer alternatives

No hand-picked alternatives for this plant yet. You can still pick your own using the Compare button on any other plant.

Source evidence

ASPCA Toxic Plant List

toxicology · 99% reliability

Open source

Yellow Oleander contains cardiac glycosides which are toxic to both cats and dogs.

NC State Extension Plant Toolbox

botanical · 94% reliability

Open source

Thevetia peruviana is a poisonous plant that should be kept away from pets and children.

cats safety page My cat ate Yellow Oleander dogs safety page My dog ate Yellow Oleander

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