One of the world's oldest hippos, the 55-year-old "Hippolyte", died in 2016 at the Silesian Zoological Garden, Poland. He stayed with one partner, "Hamba", for 45 years. Together they lived to see 14 offspring. Unfortunately, Hamba passed away in 2011. The oldest known hippo living at the Mesker Park Zoo in Evansville, Indiana, was called "Donna" and lived for 61 years. The oldest ever recorded hippo was "Bertha", who lived for approximately 65 years in the Manilla Zoo, Philippines.
