Yes, Oregano is toxic to dogs!
Dogs accidentally consuming the Oregano 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).
Oregano consumption is also toxic to Cats and Horses.
Toxic Principles Of Oregano: Gastrointestinal irritants.
More Info About The Oregano Plant
Scientific Name: Origanum vulgare hirtum
Family: Lamiaceae.
Also known as: Greek Oregano.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.
