On July 17, 2019, Universal released a behind-the-scenes featurette detailing the various aspects of the film's production and featuring interviews with the cast and crew.[44] The first trailer for the film was released on July 18, 2019.[45] It received negative reviews, with many viewers unsettled by the mix of CGI and live-action used to portray the cats,[46][47][48][49][50][51][52] citing the movie's effects as an example of the uncanny valley.[53][54]