Why it's dangerous
The plant contains saponins which act as irritants to the gastrointestinal tract and can affect the nervous system, leading to digestive upset and neurological signs.
Toxic compound: Saponins
Good to know
Dilated pupils are specifically noted as a common sign in cats.
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.