Yes, Jonquil is toxic to dogs!
Dogs accidentally consuming the Jonquil 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).
Jonquil consumption is also toxic to Cats and Horses.
Toxic Principles Of Jonquil: Lycorine and other alkaloids.
More Info About The Jonquil Plant
Scientific Name: Narcissus jonquilla
Family: Amaryllidaceae.
Also known as: Daffodil, Narcissus, Paper White.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.
