PupkeeperToxicEmergency
Is yellow oleander and pong-pong toxic to dogs?
Highly toxic. Yellow oleander and pong-pong (sea mango) contain heart poisons like oleander that can cause vomiting and a slow or irregular heartbeat.
If your dog ate or touched this, call your vet or a pet poison line now
United States
Poison lines in other countries: United Kingdom, Australia, Canada, New Zealand
What to do now
- Call your vet or a pet poison line now.
- Take any plant pieces away and rinse your dog's mouth with water.
- Bring a piece of the plant in a bag, or a photo, to help identify it.
- Get to a vet right away, even if your dog seems fine.
Don't
- Don't make your dog vomit unless a vet tells you to.
Signs to watch for
- Vomiting
- Diarrhea
- Slow or irregular heartbeat
Why
Both plants contain cardiac glycosides (cardenolides). Pong-pong seeds have caused dangerous, sometimes deadly heart rhythm problems in people.
Sources
- ASPCA Animal Poison Control: Yellow Oleander
- Girsberger et al., Case Reports in Critical Care (2025): Cerbera odollam (pong-pong) poisoning
- Pet Poison Helpline: Toxic Plants to Pets (first aid)
Guide reviewed 9 October 2026.
General information from the sources above, not a diagnosis. When in doubt, call your vet.