Iota Geminorum IV
Iota Geminorum IV, also known as Tribble Prime or the tribble homeworld, was the uninhabited fourth planet in the Iota Geminorum system, in the Beta Quadrant, and the homeworld of the tribble, as well as an abundance of reptiles, the latter keeping the former in check. In the 23rd century, this planet was within the Klingon Empire's sphere of influence. (; )

In 2257, this planet's location was labeled on the star chart showing the trajectory of Lieutenant Spock's shuttle. ()

Around stardate 1421.9, Starfleet scientist Edward Larkin genetically-engineered sample specimens of tribbles from the planet. Larkin, who was later described as an idiot, believed them to be a suitable food source save for their very slow breeding rate, which he increased with disastrous consequences. ()

In 2259, the location of this planet was labeled on a stellar cartography chart that was seen on the 's ready room viewscreen. This planet's symbol was a red Klingon Empire logo, indicating its affiliation with the empire. () 

In order to fulfill their self-given task to hunt the tribble species to extinction, a Klingon armada obliterated the tribbles' homeworld, and by the late 23rd century, the species was entirely eradicated. ()

In 2369, a chart illustrating various creatures, including tribbles, from around the known galaxy was displayed in a classroom aboard Deep Space 9. The tribble homeworld was mentioned on this chart. ( okudagram)

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