Yes, Hortensia is toxic to dogs!
Dogs accidentally consuming the Hortensia 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).
Hortensia consumption is also toxic to Cats and Horses.
Toxic Principles Of Hortensia: Cyanogenic glycoside.
More Info About The Hortensia Plant
Scientific Name: Hydrangea arborescens
Family: Hydrangeaceae.
Also known as: Hydrangea, Hills of Snow, Seven Bark.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.
