Celeb zookeeper Jack Hanna doesn't know he has Alzheimer's - Los

Celebrity zookeeper Jack Hanna doesn't comprehend that he has Alzheimer's disease, his family says. It went public with his health challenges two years ago.
Celebrity zookeeper Jack Hanna doesn't comprehend that he has Alzheimer's disease, his family says. It went public with his health challenges two years ago.

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Jack Hanna no longer recognizes loved ones as his Alzheimer's disease is advancing fast, family says - ABC7 San Francisco

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Celebrity zookeeper Jack Hanna diagnosed with dementia

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Jack Hanna No Longer Recognizes His Family as They Prepare for His Final Days

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Celeb zookeeper Jack Hanna doesn't know he has Alzheimer's - Los Angeles Times

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David Letterman regular Jack Hanna, 76, battling advanced stage of Alzheimer's disease