 She then lived with another male gorilla, Ndume, until her death.Koko's weight of was higher than would be normal for a gorilla in the wild, where the average weight is approximately , but the foundation stated that Koko "is, like her mother, a larger frame Gorilla".Koko died in her sleep during the morning of June 19, 2018, at the Gorilla Foundation's preserve in Woodside, California, at the age of 46.