Yes, Mother-in-Law’s Tongue is toxic to dogs!
Dogs accidentally consuming the Mother-in-Law’s Tongue 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).
Mother-in-Law’s Tongue consumption is also toxic to Cats.
Toxic Principles Of Mother-in-Law’s Tongue: Saponins.
More Info About The Mother-in-Law’s Tongue Plant
Scientific Name: Sansevieria trifasciata
Family: Agavaceae.
Also known as: Snake Plant, Golden Bird’s Nest, Good Luck Plant.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.