Following production of "The Slaver Weapon", Niven returned to his Known Space concept and began to expand it. "
The Borderland of Sol" was developed from his original pitch for
The Animated Series and was first published in
Analog magazine in January 1975, and republished in the collection
Tales of Known Space in the same year. It was awarded the
Hugo Award for
Best Novelette in 1976, and republished as part of the novel
Crashlander in 1994. Niven later wrote a storyline in the syndicated
Star Trek newspaper comic strip entitled "The Wristwatch Plantation", which re-introduced the Kzinti to that universe once more. While production was under way on the
fourth season of
Star Trek: Enterprise, Niven commented that he was aware of efforts to re-introduce the Kzinti into the
Star Trek franchise, and had "always hoped [they] could make it work." 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. In the
Star Trek: Picard episode "
Nepenthe",
William Riker references "The Slaver Weapon" by saying, "We've had a little trouble around here lately with the
Kzinti." A Kzin Starfleet officer is a minor recurring character in
Star Trek: Lower Decks with the name Taylor. == Notes ==