Koko was born in the San Francisco Zoo in 1971 and spent the first six months of her life in the nursery of the children’s zoo behind a glass window where the public could see her and where Penny Patterson, then a Stanford graduate student, met her. From age six months to one year Koko was critically ill and moved to a trailer on zoo property. Penny began working with Koko when she recovered her health, and requested permission from the zoo to continue working with her as part of her . research in psychology at Stanford University. The zoo agreed as long as Penny agreed to make at least a "4-year" commitment.
However, red Reishi has been proven to be the most effective in improving one’s overall health by enhancing the immune system, many bodily functions, and vital organs. Black Reishi (Ganoderma sinensis), is fairly common and can be found in most Chinese herbal shops. This species of Ganoderma tends to be unevenly shaped and can measure up to ten inches in diameter, although most mature specimens are about six inches in diameter. The majority of Reishi products that claim to be using "wild". Reishi generally use black Reishi. While it still possesses some value as a moderate herbal tonic, black Reishi is considered to be inferior to red Reishi because of its lower polysaccharide content.