Glommer
From Memory Alpha, the free Star Trek reference.
The glommer is a predator genetically engineered by Klingons to hunt, kill and eat tribbles. The first glommer of its kind was stolen by Cyrano Jones in 2269 claiming it under the space salvage laws.
That same year, Captain James T. Kirk rescued Cyrano Jones from the Klingons. Cyrano brought the Glommer with him onto the Enterprise. After the tribbles grew to be enormous, the Glommer did not seem so eager to eat them. (TAS: "More Tribbles, More Troubles")
