Ponso has lived on an island off the Ivory Coast for the past three decades, ever since the New York Blood Center (NYBC), which used Ponso for medical testing, abandoned him there along with 20 other chimps in 1983.
Soon after, all his friends died off of disease and starvation, leaving just Ponso and his family. Then, in 2013, Ponso's mate and children also weakened and died.
But Ponso survived, thanks to the hard work of a few people who refused to abandon him when everyone else had. For years, a local man named Germaine brought him bananas and kept Ponso company.