2nd Nat Geo Cover
Koko’s relationship with All Ball was the inspiration behind the second National Geographic feature in January of 1985. Koko was seen on the cover caring for her pet kitty. The photo is great and was taken by none other than Ronald Cohn.
2nd Nat Geo Cover
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She Displayed Grief
Sadly in 1984, All Ball died. She escaped from Koko’s cage and was struck by a car. Petterson stated Koko signed “Bad, sad, bad” and “Frown, cry, frown, sad” in response to the event. Patterson also stated Koko made sounds similar to humans while they are weeping.
She Displayed Grief