Yes, Straight-Margined Dracaena is toxic to dogs!
Dogs accidentally consuming the Straight-Margined Dracaena 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).
Straight-Margined Dracaena consumption is also toxic to Cats.
Toxic Principles Of Straight-Margined Dracaena: Unknown.
More Info About The Straight-Margined Dracaena Plant
Scientific Name: Dracaena marginata
Family: Agavaceae.
Also known as: red-margined dracaena.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.