The veterinary and elephant care teams decided to humanely euthanize Rex, who died peacefully Tuesday at the Oklahoma City Zoo's elephant barn at Sanctuary Asia. "Rex’s life and continuing ...

A 57-year-old Asian elephant was euthanized following chronic pain, an Oklahoma zoo said. Rex, “one of the oldest male Asian elephants” in the Association of Zoos and Aquariums, was being ...

Even a juvenile T. rex could reach up to four or five metres long and weigh up to 900kg, which is about as heavy as a teenage elephant. Full-grown adults could be more than 12 metres long and ...