FILE - This Dec. 15, 2016, photo shows Colo, a Western Gorilla, as she rested in her enclosure at the Columbus Zoo, in Columbus, Ohio. Colo died in March of 2017. It's been a challenging year that began on Jan. 1, 2021, the first day of famed zookeeper Jack Hanna's retirement — after 42 years as the beloved celebrity director-turned-ambassador of the nation’s second-largest zoo. But the Association of Zoos and Aquariums' president predicts incoming CEO Tom Schmid can bring the zoo “roaring back.” (AP Photo/John Minchillo, File)