Yes, Castor Bean Plant is toxic to dogs!
Dogs accidentally consuming the Castor Bean Plant plants can show the following clinical symptoms: Vomiting, Prolonged Depression, Incoordination, Hypersalivaton, Sleepiness Or Excitation, Dilated Pupils, Low Body Temperature, Low Blood Pressure, Coma, Seizure And Death (In Rare Cases).
Castor Bean Plant consumption is also toxic to Cats and Horses.
Toxic Principles Of Castor Bean Plant: Ricin.
More Info About The Castor Bean Plant Plant
Scientific Name: Ricinus communis
Family: Euphorbiaceae.
Also known as: Castor Oil Plant, Mole Bean Plant, African Wonder Tree, Castor Bean.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.