Why it's dangerous
Ingestion causes gastrointestinal irritation, while large amounts can lead to cardiovascular instability and neurological dysfunction due to the presence of toxic lectins and alkaloids.
Toxic compound: polysaccharides, alkaloids, and lectins
Good to know
The American variety (Phoradendron serotinum) is generally less toxic than the European variety (Viscum album).
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.