Gazelles were a type of Earth mammal the Third Doctor and the Brigadier once encountered at a zoo. Normally docile, the gazelle was attacking its handlers. This odd behaviour made the Doctor and the UNIT team suspicious of nearby activities. (COMIC: The Arkwood Experiments)
The Seventh Doctor and Ace saw gazelles living in the Ngorogoro Crater in 1926. (PROSE: Prelude Birthright)
Gazelles were among the animals on board the Ark. (PROSE: The Ark)
An animatronic soldier at Winkle's Wonderland was named Sergeant Gazelle. (AUDIO: Zagreus)