Yes, Skunk Cabbage is toxic to dogs!
Dogs accidentally consuming the Skunk Cabbage 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).
Skunk Cabbage consumption is also toxic to Cats and Horses.
Toxic Principles Of Skunk Cabbage: Insoluble calcium oxalates.
More Info About The Skunk Cabbage Plant
Scientific Name: Symplocarpus foetidus
Family: Araceae.
Also known as: Skunk Weed, Polecat Weed, Meadow Cabbage, Swamp Cabbage.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.