Known as:  Common Tansy, Tansy
Latin Name:  Tanacetum vulgare (Asteraceae)
Description: Tansy is the common name for the whole family.  Member of the daisy family.  Common Tansy grows to about 3 feet high and has deeply divided, fern-like leaves with saw-toothed edges and yellow, strong-scented flowers in a flat cluster at the top of the plant.
Poisonous Parts: Leaves, stems.  Low toxicity. Tanecetin oil is the probable cause of the symptoms.
Symptoms: Salivating, colic, abdominal pain.
Treatment: Contact your veterinarian if symptoms are severe.  Prevent your pet from eating any more of the plant.

Image courtesy of Brousseau California Flora Photos.