K-9 - Talking robot dog on the British sci-fi series DOCTOR WHO/BBC/1963-90. Created by Dr. Marius, K-9 was given to Timelord  Doctor Who as a reward for stopping the spread of a dread disease on the 1977-78 episode "The Invisible Enemy" (actually due to weight restrictions the Professor could not take K-9 with him to Earth so he gave it to the Doctor and his companion Leela). Traveling with the Doctor in the time machine known as the TARDIS, K-9 exhibited a variety of special skills including talking (voice John Leeson/David Brierley), moving about via treads/wheels, protecting itself and others with a laser beam ray built into its mussel and last, but not least, wagging its metallic tail. K-9's small box-shaped body also had a storage cavity located in its chest. A cloth collar of Scottish plaid design circled K-9's silver-colored neck/midsection. The spin-off series K-9 AND COMPANY/SYN/1985 starred Elisabeth Sladen as Sarah Jane Smith, a former companion of Doctor Who who used K-9 (a gift from the Doctor) to solve crimes. See also - ALIENS: "Doctor Who"