Yes, Taro is toxic to dogs!
Dogs accidentally consuming the Taro 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).
Taro consumption is also toxic to Cats.
Toxic Principles Of Taro: Insoluble calcium oxalates.
More Info About The Taro Plant
Scientific Name: Colocasia esculenta
Family: Araceae.
Also known as: Caladium, Elephant’s Ears, Malanga.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.