Yes, Wild Arum is toxic to dogs!
Dogs accidentally consuming the Wild Arum 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).
Wild Arum consumption is also toxic to Cats and Horses.
Toxic Principles Of Wild Arum: Insoluble calcium oxalates.
More Info About The Wild Arum Plant
Scientific Name: Arum palestinum
Family: Araceae.
Also known as: Black Calla, Wild Calla, Solomon’s Lily.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.