Yes, Bobbins is toxic to dogs!
Dogs accidentally consuming the Bobbins 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).
Bobbins consumption is also toxic to Cats and Horses.
Toxic Principles Of Bobbins: Insoluble calcium oxalates.
More Info About The Bobbins Plant
Scientific Name: Arum maculatum
Family: Araceae.
Also known as: Arum, Lord-and-Ladies, Adam-and-Eve, Starch Root, Wake Robin, Cuckoo Plant.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.