Dolly the Southern white rhino had to be euthanized due to medical issues at the Tennessee zoo where she had lived since 1976 ...

Visitors and staff at Zoo Knoxville are mourning the passing of the oldest rhinoceros in the United States. Dolly was a southern white rhino who spent decades living at the Tennessee zoo.

Dolly the Southern white rhino had to be euthanized due to medical issues at the Tennessee zoo where she had lived since 1976. Screengrab from Zoo Knoxville's Facebook post A 56-year-old ...