PupkeeperToxicEmergency
Is castor bean plant toxic to dogs? Yes: extremely toxic
Extremely toxic. Castor beans contain ricin, which can cause severe vomiting, kidney failure, seizures and death.
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, Canada, Australia, New Zealand, Belgium, France, JM, PR, Singapore, Switzerland, TT, VI
Castor bean plant and dogs: key facts
- Verdict
- Toxic · Emergency: get help now
- What it can do
- Burning or irritated mouth, increased thirst, vomiting, diarrhea, sometimes bloody and loss of appetite and weakness. All 8
- How fast
- 12-48 hours
- What to do now
- Call your vet or a pet poison line now. All steps
- Sources
- ASPCA Animal Poison Control, Pet Poison Helpline. Reviewed 9 October 2026.
What should I do if my dog ate castor bean plant?
- 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 help even if your dog seems fine; signs often start 12 to 48 hours later.
Don't
- Don't make your dog vomit unless a vet tells you to.
- Don't give milk, oil, salt or other home remedies unless a vet tells you to.
Symptoms to watch for
- Burning or irritated mouth
- Increased thirst
- Vomiting
- Diarrhea, sometimes bloody
- Loss of appetite and weakness
- Trembling or wobbliness
- Fever
- Seizures
When signs appear: 12-48 hours
Why
The seeds contain ricin, a highly potent toxin that stops the body's cells from making proteins.
Sources
- ASPCA Animal Poison Control: Castor Bean Plant
- Pet Poison Helpline: Castor Bean
- Pet Poison Helpline: Toxic Plants to Pets (first aid)
Guide reviewed 9 October 2026. Page updated 7 November 2026.
General information from the sources above, not a diagnosis. When in doubt, call your vet.