European mistletoe contains viscotoxins that can cause severe GI and cardiac signs.
The European species (Viscum album) is considered more toxic than the American species.
Mistletoe contains viscotoxins (proteins similar to ricin) and lectins. These cause severe gastrointestinal irritation, low blood pressure, and at high doses cardiac arrhythmias and collapse.
Sources
Several berries or a sprig of leaves can cause symptoms in a medium dog. Treat any ingestion as a vet visit.
Contact your veterinarian or an emergency animal poison hotline immediately. Do not induce vomiting unless instructed by a vet.
callFind Emergency Vet