Oklahoma City Zoo Euthanizes Elderly Elephant Rex

The Oklahoma City Zoo announced the humane euthanization of Rex, its oldest Asian elephant, on January 14, 2025, due to declining health from age-related issues, including advanced osteoarthritis. At approximately 57 years old, Rex was a cornerstone of the Zoo's elephant breeding program, having fathered three calves, with one of his daughters currently expecting her first calf. Despite a comprehensive geriatric care program, his health deteriorated, leading caretakers and veterinary teams to conclude that his quality of life had diminished beyond medical intervention. Rex was recognized for his impressive tusks and unique personality, preferring a bachelor lifestyle while being a favorite among visitors. His legacy includes seven living calves and five grand-calves, contributing to the Zoo's commitment to conservation and animal care. Rachel Boyd, the Zoo's elephant curator, emphasized that Rex's influence on the herd and the Zoo's conservation efforts will be remembered.