Dolittle releases to theatres on January 17, 2020. Robert Downey Jr. was chosen to star in the movie on March 20, 2017. Back then, the film was set to be called. "The Voyage of Doctor Dolittle. In December 2017, Jim Broadbent and Harry Collet were cast. Michael Sheen and Antonio Banderas were the next stars named to be cast in the film in February 2018. It was also at this time that Emma Thompson, Ralph Fiennes, Tom Holland, and Selena Gomez were cast to be the voices of the animals.
The animal cast includes a bear, a lioness, and a tiger. In March 2018, Craig Robinson, Octavia Spencer, and many others joined the voice cast. Production started in mid-February 2018. In April 2019, the crew reported three weeks of re-shoots due to poor test screenings. In August 2019, the title of the movie changed from The Voyage of Doctor Dolittle to Dolittle. The original release was May 24, 2019. It was subsequently pushed back to January 17, 2020.