Hanabiko “Koko” (July 4, 1971 – June 19, 2018) was a female western lowland gorilla. Koko was born in San Francisco Zoo, nd lived most of her life at The Gorilla Foundation’s preserve in the Santa Cruz Mountains. The name “Hanabiko” (花火子),  ’fireworks child’, is of Japanese origin and is a reference to her date of birth, the Fourth of July. Koko gained public attention upon a report of her having adopted a kitten as a pet and naming him “All Ball”, which the public perceived as her ability to rhyme.