Spiny, boar-like animals from the Klingon world, kept as pets and hunted for food.
Targs are stocky, tusked animals with spiny backs, native to the Klingon homeworld. Klingons keep them as pets and also hunt them for food.
Worf had a pet targ as a boy. In Where No One Has Gone Before, when thoughts became reality in a distant region of space, a targ appeared on the Enterprise as Worf remembered it.