Seven cats and kittens played the title character. Each one received a case of Fancy Feast and an assortment of cat toys. Since Keegan-Michael Key is allergic to cats, he had to take a medication in order to interact with them.
In an interview with Ellen in December of 2017, Tiffany Haddish stated that she kept one of the cats who played Keanu as a pet.
This movie has several hit songs from George Michael, who died the same year as it was released. He died on December 25, 2016.