Robot

If you are looking for the story see: DW: Robot (TV story).

A robot is a mechanical device with the ability to do work without the help of a living organism. The most common type of robot is an android (a humanoid robot, e.g. Kamelion, who could also shape-shift), but they come in various forms such as dog-like (e.g. K-9). (DW: The King's Demons, The Invisible Enemy)

Robots are not to be confused with machines, which can be called thinking machines. The difference is that while machines can function by themselves, robots require a control.