. . "K9 (Doctor Who)" . . . "K9 Mark II" . . "K\u00B79" . . . . . . . "K9 Mk. III" . . . "K-9" . . . . . "K9 Mk. II" . . . . . "K9 (''Doctor Who'')" . . . "K9 (Doctor Who)" . . . "K9's" . "The Invisible Enemy (1977)" . . "the robotic dog from the ''Doctor Who'' TV series" . . . . "K9" . . . "K.9" . . . . "K9 (Doctor Who)#Models" . . . . . . . . . . "K9 Mark III" . .