Monkeys are an animal species native to certain islands in RuneScape, although they can also be found in the Ardougne Zoo. They typically inhabit leafy, thick jungles such as on Karamja or Ape Atoll. In RuneScape, 'monkey' is typically used to refer to any primate, and is often used interchangeably with 'ape'.
In RuneScape, there are two main monkey species: the Karamjan monkey and the Ape Atoll monkey. Karamjan monkeys are typically known for being the more intelligent of the two, while the monkeys which inhabit Ape Atoll are generally larger.
The Karamjan monkey is a small, level 3 monkey found all over Karamja. They feature heavily in the Tai Bwo Wannai Trio quest, and partially in Monkey Madness I - monkeys in Ardougne Zoo can be spoken to during and after the quest. These monkeys are not often killed due to their very low combat level, although their bones do give slightly more experience than regular bones.
Ape Atoll monkey
At some point in the past, possibly before human existence, the patron goddess of monkeys, Marimbo, visited Ape Atoll in search of followers. She discovered the primates on the island and granted them intelligence - with this, the apes built the city of Marim, and a temple to worship her. Since then, the monkeys inhabiting Ape Atoll have made great technological progress - the crafting and use of weaponry; the use of magic and runes; the creation of a monkey language (which can be translated by the m'speak amulet), and the foundation of a religion worshipping Marimbo.
During and after the Monkey Madness I quest, players wielding a particular greegree can transform into one of eight types of monkey: the Karamjan monkey; 2 types of Zombie monkey (small and large); 2 types of Ninja monkey (small and large), and 3 types of gorilla (with or without beard and a special blue-faced one).