Kzinti

The Kzinti warriors were a race of Cat-People. (PROSE: Invasion of the Cat-People)

Behind the scenes
The Kzinti were created by science fiction author. They made their first appearance in the short story "The Warriors" which takes place in his universe. Niven's short story "", which featured the Kzinti, was adapted into the episode, which placed the Kzinti in the Star Trek universe.