Mouse
A mouse was a species of mammal native to Earth and possibly other parts of the universe.
On Gallifrey, a mouse was enlarged by the Rani during an experiment. The giant-sized mouse ate the Lord President's pet cat and bit the President himself. (TV: The Mark of the Rani)
In the year 4000, Froyn and Rhynmal intended to test their new long-range teleportation system by sending two lab mice to Mira. (TV: The Daleks' Master Plan)
The Fourth Doctor compared Leela to a mouse after inhaling helium temporarily changed her voice. (TV: The Robots of Death)
The Doctor occasionally carried a toy mouse. (TV: The Talons of Weng-Chiang, The Doctor's Daughter)
The Doctor claimed that there was a planet which had talking mice. (PROSE: Winner Takes All)
Behind the Scenes
- Jon Pertwee acquired a field mouse as a temporary pet during a break in the location filming for TV: The Mutants at Stone House Farm in Frindsbury, Kent. He named the mouse Solos, after the planet featured in the story.