PupkeeperToxicEmergency
Is azalea and rhododendron toxic to dogs?
Highly toxic. Even a few azalea or rhododendron leaves can cause vomiting, drooling, weakness and heart problems.
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 a photo of the plant or bring a piece in a plastic bag.
- Get help even if your dog seems fine; signs can start hours later.
Don't
- Don't make your dog vomit unless a vet tells you to.
Signs to watch for
- Drooling
- Vomiting
- Diarrhea
- Weakness
- Trouble breathing
- Heart problems or collapse
- Seizures or coma
When signs appear: Within hours
Why
These plants contain grayanotoxins, natural toxins that can affect the stomach, heart and nervous system.
Sources
- ASPCA Animal Poison Control: Azalea
- AKC: Poisonous Plants for Dogs
- Merck Veterinary Manual: Houseplants and Ornamentals Toxic to Animals
Guide reviewed 9 October 2026.
General information from the sources above, not a diagnosis. When in doubt, call your vet.