Casey Self works with hippo ‘Liberty’ in the Ruwenzori area of the Kansas City Zoo. Here she utilizes hand signals, a clicker, and healthy treats to evoke certain responses, such as opening their mouths, which allow her to safely check on the dental health of the hippo. When not working at her civilian job as a zookeeper, Self is a Citizen-Airman with the 131st Bomb Wing, Missouri Air National Guard, at Whiteman AFB., Mo.
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