Why it's dangerous
The alkaloids found in the plant affect the central nervous system, leading to either sedation or an excited, euphoric state depending on the species.
Toxic compound: Alkaloids
Good to know
Ingestion of any part of the plant can be toxic; clinical signs vary between dogs and cats, particularly regarding pupil response.
Sources
This page is informational and is not veterinary advice. If your pet has been exposed to something risky, contact your vet or an animal poison control line right away.