Famed zookeeper Jack Hanna diagnosed with dementia, family says

Famed zookeeper Jack Hanna diagnosed with dementia, family says

Jack Hanna, the director emeritus of Ohio’s Columbus Zoo and Aquarium, has been diagnosed with dementia now believed to be Alzheimer's disease , his family announced Wednesday on Twitter."Doctors have diagnosed our dad, Jack Hanna, with dementia now believed to be Alzheimer's disease.