Known As:  Privet
Latin Name:  Ligustrum vulgare
Poisonous Parts:  Entire plant.  Toxin involved is the glycoside ligustrin.
Symptoms: May produce vomiting, abdominal pain, and in some cases diarrhea.
Treatment: Unless your cat is unconscious or having convulsions, induce vomiting and follow procedures to delay absorption and speed elimination.  Get prompt veterinary assistance.