TRIBBLES TRIBBLES are harmless small spherical, hairy animals that have only one fault. They multiply very quickly if they are able to find the necessary food. They reproduce asexually by fission. TRIBBLES are notorious for being "the sweetest animals of the whole universe," but also the most useless!    Tribbles are voracious eaters of  "quadrotriticale".  The Tribbles hate Klingons!