"In 2019, Circus Roncalli out of Germany stopped using wild animals in its shows. They were just the latest of many troupes to make that decision. Even the now-defunct Ringling Bros. and Barnum & Bailey Circus began to phase elephants out of its own performances starting in 2015. But thanks to modern technology, you can still create an amazing spectacle even without mistreating innocent creatures. And ever since they bid their live animal performers farewell, Circus Roncalli has been delighting audiences with a far less cruel recreation. Their shows feature massive animal holograms."
Source: https://nerdist.com/article/german-circus-hologram-animals/