"When I first heard about Azalea, the smoking chimpanzee, I was sickened," Bekoff told The Dodo. "There is nothing natural about this and it sends all the wrong messages about just who other animals are."
"'Zoo' animals all over the world are seriously misrepresented and mistreated, so this is just another example of what so many zoos do," he added.
While the chimp's treatment is disturbing, Azalea isn't the first animal who's been trained to smoke. In 2015, a chimp in the Tianshan Zoo in China was seen chain-smoking, using the butt of his old cigarette to light a new one.
The Korean Central Zoo, where Azalea lives, also has a monkey who shoots basketballs, dogs who "solve" math equations on abacuses and doves who perform with a woman skating in an indoor stage.