Are nandina berries poisonous?

The berries of the nandina plant contain hydrocyanic acid and are poisonous. They are toxic to cats, dogs and other grazing animals, and they can cause animals to experience seizures, comas, respiratory failure and death. They are considered nontoxic to humans but may cause stomach pain if ingested.

Nandina domestica, known as nandina or heavenly bamboo, is a flowering plant in the family Berberidaceae. It is native to Japan, India and central Asia and was introduced to the west in 1804 by William Kerr, who first sent it to London. It is commonly grown as an ornamental plant in gardens.