Klingon Monster Dogs (named Warrigul in the film's novelization) are ferocious mammalianoid beasts native to the Klingons' homeworld of Qo'noS. They resemble a combination of a wild dog and a boar, but also have reptilianoid traits such as scaly skin on the face and a wide mouth with no lips. They are domesticated and kept as pets by the Klingons, as are two similar, probably related creatures: the Jackal Mastiff and the Targ.