Kongo Jungle (also known as Jungle World or Jungle) is a jungle-themed world found on Donkey Kong Island which is the home to the Kong Family. It appears numerous times in the Donkey Kong series beginning with Donkey Kong Country. It appearance changes each time it is presented. In all its different forms, Kongo Jungle always takes the look of a huge, dense jungle. The boss of this location is a giant Gnawty called Very Gnawty.
↑"About Jungle: The Jungle is the first world. This is Donkey Kong’s natural environment. There are lots of trees whose tops serve as platforms. Awks are one of the main enemies you face here, along with the tricky Frogoons. of course, expect some of the Tikis, such as Tiki Goons and Tiki Dooms. This world is the least dangerous of the eight, so it is a great place for learning how to control Donkey Kong and experimenting with his various moves." - Donkey Kong Country Returns Prima Official Game Guide, 2010, p. 18