Yes, Naked Lady is toxic to dogs!
Dogs accidentally consuming the Naked Lady 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).
Naked Lady consumption is also toxic to Cats and Horses.
Toxic Principles Of Naked Lady: Lycorine and other alkaloids.
More Info About The Naked Lady Plant
Scientific Name: Amaryllis spp.
Family: Amaryllidaceae.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.
