Prematurely born at Cincinnati Zoo, Fiona overcame odds to become a healthy hippo, now a local celebrity with plans for future companionship and a growing family.
A SeaWorld star turned controversial figure, Tilikum's life sparked debates on orca captivity, ending in policy changes and his passing in 2013.
Orphaned otter Joey gained online fame, helping Vancouver Aquarium through donations, now living happily with fellow otters under constant fan attention.
Edinburgh Zoo's honorary penguin, Sir Nils Olav holds a military title since 1961, symbolizing tradition and zoo community spirit.
Diego, once at San Diego Zoo, revived his species on Galápagos Islands, achieving conservation goals before retiring to his native home.
Rescued dolphin Winter, with a prosthetic tail, inspired films and captivated Clearwater Aquarium visitors until her recent passing in 2021.
Berlin Zoo's Knut, raised by zookeepers, became a global sensation before a tragic death from a rare disease at a young age.
Cincinnati Zoo's Harambe, involved in a controversial incident, sparked global discussion on zoo safety and animal welfare.