Yes, Hercules’ Club is toxic to dogs!
Dogs accidentally consuming the Hercules’ Club 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).
Hercules’ Club consumption is also toxic to Cats and Horses.
Toxic Principles Of Hercules’ Club: Araliin.
More Info About The Hercules’ Club Plant
Scientific Name: Aralia spinosa
Family: Araliaceae.
Also known as: Angelica Tree, Devil’s Walking Stick, Prickly Ash, Prickly Elder.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.