Columbus Zoo's Director Emeritus Jack Hanna has dementia, his daughters say
Jack Hanna, Columbus Zoo's Director Emeritus, has dementia, his daughters say Sheridan Hendrix, The Columbus Dispatch Jack Hanna talks about the 40 years he's been with the Columbus Zoo. Replay Video UP NEXT Jack Hanna has been diagnosed with dementia, now believed to be Alzheimer's disease, Hanna's three daughters announced in a letter published Wednesday. Now, Hanna's daughters — Kathaleen, Suzanne and Julie — say their dad is unable to participate in public life like he once did as his condition has severely worsened in the last few months. "A passion for wildlife...