Celebrity zookeeper Jack Hanna diagnosed with dementia
FILE—This file photo from May 22, 2014, shows Jack Hanna, Director Emeritus of the Columbus Zoo and Aquarium, right, Betty White, actress and longtime animal advocate at the grand opening of the Heart of Africa exhibit at the Columbus Zoo & Aquarium in Powell, Ohio. Hanna's family said Wednesday, April 7, that the celebrity zookeeper and frequent talk-show guest has been diagnosed with dementia and will retire from public life. In a news release they said it's believed he now has Alzheimer's disease and it has progressed very quickly in the last few months. The 74-year-old Hanna was director of the Columbus Zoo from 1978 to 1992. (Jonathan Quilter/The Columbus Dispatch via AP, File)

FILE—This file photo from May 22, 2014, shows Jack Hanna, Director Emeritus of the Columbus Zoo and Aquarium, right, Betty White, actress and longtime animal advocate at the grand opening of the Heart of Africa exhibit at the Columbus Zoo & Aquarium in Powell, Ohio. Hanna's family said Wednesday, April 7, that the celebrity zookeeper and frequent talk-show guest has been diagnosed with dementia and will retire from public life. In a news release they said it's believed he now has Alzheimer's disease and it has progressed very quickly in the last few months. The 74-year-old Hanna was director of the Columbus Zoo from 1978 to 1992. (Jonathan Quilter/The Columbus Dispatch via AP, File)

Apr. 07, 2021 03:00 PM EDT
FILE - Wildlife advocate Jack Hanna poses for a portrait with a snow leopard cub in New York on Oct. 12, 2015. The family of celebrity zookeeper and TV show host Jack Hanna said he's been diagnosed with dementia and will retire from public life. (Photo by Dan Hallman/Invision/AP, file)

FILE - Wildlife advocate Jack Hanna poses for a portrait with a snow leopard cub in New York on Oct. 12, 2015. The family of celebrity zookeeper and TV show host Jack Hanna said he's been diagnosed with dementia and will retire from public life. (Photo by Dan Hallman/Invision/AP, file)

Apr. 07, 2021 02:46 PM EDT
FILE - Wildlife advocate Jack Hanna poses for a portrait with a cheetah cub in New York on Oct. 12, 2015. The family of celebrity zookeeper and TV show host Jack Hanna said he's been diagnosed with dementia and will retire from public life. (Photo by Dan Hallman/Invision/AP, file)

FILE - Wildlife advocate Jack Hanna poses for a portrait with a cheetah cub in New York on Oct. 12, 2015. The family of celebrity zookeeper and TV show host Jack Hanna said he's been diagnosed with dementia and will retire from public life. (Photo by Dan Hallman/Invision/AP, file)

Apr. 07, 2021 02:46 PM EDT
FILE - Wildlife advocate Jack Hanna poses for a portrait with a serval cub in New York on Oct. 12, 2015. The family of celebrity zookeeper and TV show host Jack Hanna said he's been diagnosed with dementia and will retire from public life. (Photo by Dan Hallman/Invision/AP, file)

FILE - Wildlife advocate Jack Hanna poses for a portrait with a serval cub in New York on Oct. 12, 2015. The family of celebrity zookeeper and TV show host Jack Hanna said he's been diagnosed with dementia and will retire from public life. (Photo by Dan Hallman/Invision/AP, file)

Apr. 07, 2021 02:46 PM EDT
FILE—In this file photo from Sept. 5, 2013, Jack Hanna stands at the front entrance of the Columbus Zoo and Aquarium in Powell, Ohio. The family of the celebrity zookeeper and frequent talk-show guest said Wednesday, April 7, he's been diagnosed with dementia and will retire from public life. His family said in a news release it's believed he now has Alzheimer's disease and it has progressed very quickly in the last few months. The 74-year-old Hanna was director of the Columbus Zoo from 1978 to 1992. (Tom Dodge/The Columbus Dispatch via AP, File)

FILE—In this file photo from Sept. 5, 2013, Jack Hanna stands at the front entrance of the Columbus Zoo and Aquarium in Powell, Ohio. The family of the celebrity zookeeper and frequent talk-show guest said Wednesday, April 7, he's been diagnosed with dementia and will retire from public life. His family said in a news release it's believed he now has Alzheimer's disease and it has progressed very quickly in the last few months. The 74-year-old Hanna was director of the Columbus Zoo from 1978 to 1992. (Tom Dodge/The Columbus Dispatch via AP, File)

Apr. 07, 2021 03:00 PM EDT