The Forest of Gugu, or Gugu Forest, is the largest forest in the Land of Oz.
It is located in the central western part of the Gillikin Country. On its eastern side, it is bordered by rugged mountains. The Forest is dense and very extensive; many places in it have never been seen by a human being. It is ruled by its eponymous monarch, the leopard Gugu. (The Magic of Oz)
The Forest supports a large and varied wildlife population, of most types of animals to be found in Oz. This includes animals of tropical jungles and the African plains (leopards, monkeys, zebras, rhinos, hippos, elephants) and also creatures from other environments (like bears, wolves, foxes, bison, wild donkeys, kangaroos, green serpents, and even unicorns).
For a similar variety of creatures, see "The Story of Jaglon".