Tribble

Tribbles are a fictional alien species in the Star Trek universe. They were conceived by screenwriter David Gerrold and first appeared in 1967, in the fifteenth episode of the second season of Star Trek: The Original Series, titled "The Trouble with Tribbles". They are depicted as a small, furry, gentle, cute and slow-moving, but rapidly reproducing, lovable species. Though they appear infrequently on-screen, they have become a popular feature of the Star Trek universe, featuring in their own eponymous official card game, and even lending their name to a conserved family of proteins that was first identified in the fruit fly as a regulator of cell division.