While production was under way on the of "", Niven commented that he was aware of efforts to re-introduce the Kzinti into the "Star Trek" franchise, and had "always hoped could make it work." At the same time, the Kzinti were featured in the "Star Trek Communicator" magazine as one of the alien races representing the seven deadly sins, with the Kzinti being specifically related to lust. This was because of the Kzinti's need to feed on the flesh of others being "gastronomic instead of carnal" which meant that they are seen as "sensual, without being overtly sexual." A CGI animated film called "Star Trek: Lions of the Night" was in development by writer Jimmy Diggs at the time, which would have had Captain Hikaru Sulu attempting to prevent a Kzinti invasion of the Federation using the USS "Enterprise" (NCC-1701-B). Manny Coto, the show runner for "Enterprise", had been pursuing the idea of including the Kzinti into the series for the fifth season called "Kilkenny Cats" based on the Diggs idea. However, the series was cancelled at the end of the fourth and the episode was never made. Josh Finney had been commissioned by Diggs to design a Kzinti vessel for the possible inclusion in the "Enterprise" episode.