Yes, Larkspur is toxic to dogs!
Dogs accidentally consuming the Larkspur 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).
Larkspur consumption is also toxic to Cats and Horses.
Toxic Principles Of Larkspur: Diterpene alkaloids.
More Info About The Larkspur Plant
Scientific Name: Delphinium species
Family: Ranunculaceae.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.
