Yes, Bog Laurel is toxic to dogs!
Dogs accidentally consuming the Bog Laurel 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).
Bog Laurel consumption is also toxic to Cats and Horses.
Toxic Principles Of Bog Laurel: Grayanotoxin.
More Info About The Bog Laurel Plant
Scientific Name: Kalmia poliifolia
Family: Ericaceae.
Also known as: Pale Laurel, Bog Kalmia.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.