Yes, Flag is toxic to dogs!
Dogs accidentally consuming the Flag 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).
Flag consumption is also toxic to Cats.
Toxic Principles Of Flag: Pentacylic terpenoids (zeorin, missourin and missouriensin).
More Info About The Flag Plant
Scientific Name: Iris species
Family: Iridaceae.
Also known as: Iris, Snake Lily, Water Flag.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.
