Celebrity zookeeper and TV host Jack Hanna has been diagnosed with dementia, his family has announced.
In addition to his work as a zookeeper, Hanna hosted his own TV shows, including Jack Hanna’s Animal Adventures, which aired on syndication from 1993 to 2008.
Two other series followed: Jack Hanna’s Into the Wild, which began airing in 2007, and Jack Hanna’s Wild Countdown, which started in 2011.
Hanna, 74, served as director of the Columbus Zoo in Ohio between 1978 and 1992, and remained as the organisation’s director emeritus.