Yes, Buckeye is toxic to dogs!
Dogs accidentally consuming the Buckeye 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).
Buckeye consumption is also toxic to Cats and Horses.
Toxic Principles Of Buckeye: Aesculin (a glycosidic saponin), other saponins.
More Info About The Buckeye Plant
Scientific Name: Aesculus spp
Family: Hippocastanaceae.
Also known as: Horse Chestnut.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.
