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Can dogs and cats eat castor bean plant?

Short answer on castor bean plant: a veterinary emergency for both dogs and cats. See what to watch for and the veterinary sources behind each answer.

One food, two pets

What changes between dogs and cats?

Dogs and cats both have a emergency verdict.

Dogs and cats get the same answer here. Each column below lists its own signs to watch and sources.

    Emergency

    Castor Bean Plant safety for dogs

    The castor bean plant is highly toxic to dogs, especially its seeds. Ricin exposure can damage the digestive, kidney, nervous, and respiratory systems.

    Toxic principle: ricin

    Watch for

    • mouth and throat irritation
    • vomiting
    • bloody diarrhea
    • weakness
    • kidney failure
    • seizures
    • difficulty breathing

    Sources

    Reviewed 2026-07-28

    Emergency

    Castor Bean Plant safety for cats

    The castor bean plant is highly toxic to cats, especially its seeds. Ricin exposure can damage the digestive, kidney, nervous, and respiratory systems.

    Toxic principle: ricin

    Watch for

    • mouth and throat irritation
    • vomiting
    • bloody diarrhea
    • weakness
    • kidney failure
    • seizures
    • difficulty breathing

    Sources

    Reviewed 2026-07-28

    Questions owners ask about castor bean plant

    Can dogs eat castor bean plant?

    The castor bean plant is highly toxic to dogs, especially its seeds. Ricin exposure can damage the digestive, kidney, nervous, and respiratory systems.

    What should I do if my dog ate castor bean plant?

    Contact your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately. Do not wait for symptoms to appear before calling.

    What symptoms should I watch for with castor bean plant and dogs?

    mouth and throat irritation, vomiting, bloody diarrhea, weakness, kidney failure, seizures, difficulty breathing. If you notice any of these, contact your veterinarian.

    Can cats eat castor bean plant?

    The castor bean plant is highly toxic to cats, especially its seeds. Ricin exposure can damage the digestive, kidney, nervous, and respiratory systems.

    What should I do if my cat ate castor bean plant?

    Contact your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately. Do not wait for symptoms to appear before calling.

    What symptoms should I watch for with castor bean plant and cats?

    mouth and throat irritation, vomiting, bloody diarrhea, weakness, kidney failure, seizures, difficulty breathing. If you notice any of these, contact your veterinarian.

    This page is for informational purposes only and is not veterinary advice. Always consult your veterinarian about your pet's diet and health.

    Read our methodology for how every verdict is sourced and reviewed.