Jungle

A jungle was a very dense forest, usually located in hot climates. The Doctor encountered jungles on many planets in his travels, including an artificial jungle on the Ark. (TV: The Ark) He also had a jungle in his TARDIS. (PROSE: Sky Pirates!)

Jungles on Earth
The Amazon was a jungle in South America. (TV: The Green Death et. al.)

Another South American jungle was home to a mushroom known as the Great Power. (PROSE: Doctor Who and the Daleks)

The First Doctor, John and Gillian visited a jungle on Earth in 2035 where they encountered the Caterpillar Men. (COMIC: The Caterpillar Men)

Jungles on named planets

 * Aneas (PROSE: Sky Pirates!)
 * Basingstoke (COMIC: Supernature)
 * Betrushia (PROSE: St Anthony's Fire)
 * Catastrophea (PROSE: Catastrophea)
 * Chloris (TV: The Creature from the Pit)
 * Deva Loka (TV: Kinda)
 * Eden (TV: Nightmare of Eden)
 * Hondran (COMIC: The Hunters)
 * Jenggel (PROSE: Combat Rock)
 * Kar-Charrat (AUDIO: The Genocide Machine)
 * Kembel (TV: The Daleks' Master Plan)
 * Lumana (COMIC: House Pests)
 * Magella (PROSE: Birth of a Legend)
 * Marinus' Screaming Jungle (TV: The Keys of Marinus)
 * Mechanus (TV: The Chase)
 * Oroobia (PROSE: The Doctor Trap)
 * Quorus (PROSE: Doctor Who Fights Masterplan "Q")
 * Skaro's petrified jungle (TV: The Daleks)
 * Spiridon (TV: Planet of the Daleks)
 * Tigella (TV: Meglos)
 * YT45 (AUDIO: The Mind's Eye)
 * Zeta Minor (TV: Planet of Evil)

Jungles on unnamed planets
The First Doctor, Steven Taylor and Dodo Chaplet defeated Questor in the Jungle of Tropicalus. (COMIC: Death to the Doctor!)

The First Doctor, John and Gillian searched for an escaped didus in a jungle on a planet which was also inhabited by a hostile native tribe. (COMIC: The Didus Expedition)

The Second Doctor, John and Gillian tested an exploration truck he had invented in a jungle on a planet where they also encountered and destroyed a group of Daleks. (COMIC: Jungle Adventure)

The Second Doctor and Jamie McCrimmon encountered Quarks in a jungle on an Earth-like world. (COMIC: Jungle of Doom)

The Second Doctor rescued Jason Wurlitzer from dwarfs in a jungle on an Earth-like world. (COMIC: Operation Wurlitzer)

A planet used as a laboratory by the Daleks was mostly jungle. (PROSE: The Dalek Factor)