Cheetah Planet

The Cheetah World was a mysterious sentient planet and home to the Cheetah People and Kitlings.

Life forms and geographic features
The Cheetah World was an ancient barren planet of rocky deserts and dry forest. It once had inhabitants, who have now died. It orbited a red sun, which gave the planet a red tint. It was also the home-world of the Cheetah People, and Kitlings.


 * The Doctor implied that the planet was far from Earth, with many inhabitable worlds in between. We do not know if horses evolved there or if the Cheetah People imported them there.

Sentience
The Planet was in some sense, sentient and empathic and is connected to the Cheetah People. When the Cheetah People fight, the planet became unstable and starts to destroy itself. The water on the planet has healing properties to the Cheetah People. The World allowed the Cheetah People to teleport to other planets to bring back prey. It also allowed people who wished to come home enough to return there by teleportation. Near-Humans such as Humans and Gallifreyans slowly begin to metamorphosize, turning aggressive and physiclly changing into Cheetah People. The Master described the world as dying because of the aggression of its inhabitants.

History
At some point before the 20th century, an unknown civilization tried to conquer the planet. They bred the Kitlings to be their eyes and thought they could control the planet, but they were wrong. They too were turned into Cheetah People, leaving only the ruins scattered around the landscape.

During a physical struggle between the Doctor and the Master, earthquakes shook the planet, implying that it may have destroyed itself, though the Doctor told Ace that she still carried the planet inside her. (DW: Survival)